CINXE.COM

<!DOCTYPE html> <html class="client-nojs vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available" lang="pt" dir="ltr"> <head> <meta charset="UTF-8"> <title>Sinais de mais e menos – Wikipédia, a enciclopédia livre</title> <script>(function(){var className="client-js vector-feature-language-in-header-enabled vector-feature-language-in-main-page-header-disabled vector-feature-sticky-header-disabled vector-feature-page-tools-pinned-disabled vector-feature-toc-pinned-clientpref-1 vector-feature-main-menu-pinned-disabled vector-feature-limited-width-clientpref-1 vector-feature-limited-width-content-enabled vector-feature-custom-font-size-clientpref-1 vector-feature-appearance-pinned-clientpref-1 vector-feature-night-mode-enabled skin-theme-clientpref-day vector-toc-available";var cookie=document.cookie.match(/(?:^|; )ptwikimwclientpreferences=([^;]+)/);if(cookie){cookie[1].split('%2C').forEach(function(pref){className=className.replace(new RegExp('(^| )'+pref.replace(/-clientpref-\w+$|[^\w-]+/g,'')+'-clientpref-\\w+( |$)'),'$1'+pref+'$2');});}document.documentElement.className=className;}());RLCONF={"wgBreakFrames":false,"wgSeparatorTransformTable":[",\t."," \t,"],"wgDigitTransformTable":["",""], "wgDefaultDateFormat":"dmy","wgMonthNames":["","janeiro","fevereiro","março","abril","maio","junho","julho","agosto","setembro","outubro","novembro","dezembro"],"wgRequestId":"d95b183c-9ec5-4c16-94eb-7a789691b8d3","wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"Sinais_de_mais_e_menos","wgTitle":"Sinais de mais e menos","wgCurRevisionId":62004163,"wgRevisionId":62004163,"wgArticleId":2883731,"wgIsArticle":true,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":["Páginas que utilizam a extensão WikiHiero","!Artigos que carecem de notas de rodapé desde setembro de 2021","!Artigos que carecem de notas de rodapé sem indicação de tema","!Esboços sobre matemática","!Esboços maiores que 1000 bytes","Aritmética elementar","Símbolos matemáticos"],"wgPageViewLanguage":"pt","wgPageContentLanguage":"pt","wgPageContentModel":"wikitext","wgRelevantPageName":"Sinais_de_mais_e_menos", "wgRelevantArticleId":2883731,"wgIsProbablyEditable":true,"wgRelevantPageIsProbablyEditable":true,"wgRestrictionEdit":[],"wgRestrictionMove":[],"wgNoticeProject":"wikipedia","wgCiteReferencePreviewsActive":false,"wgMediaViewerOnClick":true,"wgMediaViewerEnabledByDefault":true,"wgPopupsFlags":0,"wgVisualEditor":{"pageLanguageCode":"pt","pageLanguageDir":"ltr","pageVariantFallbacks":"pt"},"wgMFDisplayWikibaseDescriptions":{"search":true,"watchlist":true,"tagline":true,"nearby":true},"wgWMESchemaEditAttemptStepOversample":false,"wgWMEPageLength":5000,"wgRelatedArticlesCompat":[],"wgCentralAuthMobileDomain":false,"wgEditSubmitButtonLabelPublish":true,"wgULSPosition":"interlanguage","wgULSisCompactLinksEnabled":false,"wgVector2022LanguageInHeader":true,"wgULSisLanguageSelectorEmpty":false,"wgWikibaseItemId":"Q747083","wgCheckUserClientHintsHeadersJsApi":["brands","architecture","bitness","fullVersionList","mobile","model","platform","platformVersion"],"GEHomepageSuggestedEditsEnableTopics": true,"wgGETopicsMatchModeEnabled":true,"wgGEStructuredTaskRejectionReasonTextInputEnabled":false,"wgGELevelingUpEnabledForUser":false,"wgSiteNoticeId":"2.30"};RLSTATE={"ext.gadget.FeedbackHighlight-base":"ready","ext.gadget.keepPDU":"ready","ext.globalCssJs.user.styles":"ready","site.styles":"ready","user.styles":"ready","ext.globalCssJs.user":"ready","user":"ready","user.options":"loading","ext.wikihiero":"ready","ext.cite.styles":"ready","skins.vector.search.codex.styles":"ready","skins.vector.styles":"ready","skins.vector.icons":"ready","ext.wikimediamessages.styles":"ready","ext.visualEditor.desktopArticleTarget.noscript":"ready","ext.uls.interlanguage":"ready","wikibase.client.init":"ready","ext.wikimediaBadges":"ready","ext.dismissableSiteNotice.styles":"ready"};RLPAGEMODULES=["ext.cite.ux-enhancements","site","mediawiki.page.ready","mediawiki.toc","skins.vector.js","ext.centralNotice.geoIP","ext.centralNotice.startUp","ext.gadget.Topicon","ext.gadget.Metacaixa", "ext.gadget.TitleRewrite","ext.gadget.ElementosOcultaveis","ext.gadget.FeedbackHighlight","ext.gadget.ReferenceTooltips","ext.gadget.NewVillagePump","ext.gadget.wikibugs","ext.gadget.charinsert","ext.gadget.requestForAdminship","ext.gadget.WikiMiniAtlas","ext.gadget.PagesForDeletion","ext.urlShortener.toolbar","ext.centralauth.centralautologin","mmv.bootstrap","ext.popups","ext.visualEditor.desktopArticleTarget.init","ext.visualEditor.targetLoader","ext.echo.centralauth","ext.eventLogging","ext.wikimediaEvents","ext.navigationTiming","ext.uls.interface","ext.cx.eventlogging.campaigns","ext.cx.uls.quick.actions","wikibase.client.vector-2022","ext.checkUser.clientHints","ext.growthExperiments.SuggestedEditSession","oojs-ui.styles.icons-media","oojs-ui-core.icons","wikibase.sidebar.tracking","ext.dismissableSiteNotice"];</script> <script>(RLQ=window.RLQ||[]).push(function(){mw.loader.impl(function(){return["user.options@12s5i",function($,jQuery,require,module){mw.user.tokens.set({"patrolToken":"+\\","watchToken":"+\\","csrfToken":"+\\"}); }];});});</script> <link rel="stylesheet" href="/w/load.php?lang=pt&modules=ext.cite.styles%7Cext.dismissableSiteNotice.styles%7Cext.uls.interlanguage%7Cext.visualEditor.desktopArticleTarget.noscript%7Cext.wikihiero%2CwikimediaBadges%7Cext.wikimediamessages.styles%7Cskins.vector.icons%2Cstyles%7Cskins.vector.search.codex.styles%7Cwikibase.client.init&only=styles&skin=vector-2022"> <script async="" src="/w/load.php?lang=pt&modules=startup&only=scripts&raw=1&skin=vector-2022"></script> <meta name="ResourceLoaderDynamicStyles" content=""> <link rel="stylesheet" href="/w/load.php?lang=pt&modules=ext.gadget.FeedbackHighlight-base%2CkeepPDU&only=styles&skin=vector-2022"> <link rel="stylesheet" href="/w/load.php?lang=pt&modules=site.styles&only=styles&skin=vector-2022"> <meta name="generator" content="MediaWiki 1.44.0-wmf.4"> <meta name="referrer" content="origin"> <meta name="referrer" content="origin-when-cross-origin"> <meta name="robots" content="max-image-preview:standard"> <meta name="format-detection" content="telephone=no"> <meta name="viewport" content="width=1120"> <meta property="og:title" content="Sinais de mais e menos – Wikipédia, a enciclopédia livre"> <meta property="og:type" content="website"> <link rel="preconnect" href="//upload.wikimedia.org"> <link rel="alternate" media="only screen and (max-width: 640px)" href="//pt.m.wikipedia.org/wiki/Sinais_de_mais_e_menos"> <link rel="alternate" type="application/x-wiki" title="Editar" href="/w/index.php?title=Sinais_de_mais_e_menos&action=edit"> <link rel="apple-touch-icon" href="/static/apple-touch/wikipedia.png"> <link rel="icon" href="/static/favicon/wikipedia.ico"> <link rel="search" type="application/opensearchdescription+xml" href="/w/rest.php/v1/search" title="Wikipédia (pt)"> <link rel="EditURI" type="application/rsd+xml" href="//pt.wikipedia.org/w/api.php?action=rsd"> <link rel="canonical" href="https://pt.wikipedia.org/wiki/Sinais_de_mais_e_menos"> <link rel="license" href="https://creativecommons.org/licenses/by-sa/4.0/deed.pt"> <link rel="alternate" type="application/atom+xml" title="''Feed'' Atom Wikipédia" href="/w/index.php?title=Especial:Mudan%C3%A7as_recentes&feed=atom"> <link rel="dns-prefetch" href="//meta.wikimedia.org" /> <link rel="dns-prefetch" href="//login.wikimedia.org"> </head> <body class="skin--responsive skin-vector skin-vector-search-vue mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Sinais_de_mais_e_menos rootpage-Sinais_de_mais_e_menos skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Saltar para o conteúdo</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="''Site''"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Menu principal" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Menu principal</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Menu principal</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">mover para a barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">ocultar</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navegação </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:P%C3%A1gina_principal" title="Visitar a página principal [z]" accesskey="z"><span>Página principal</span></a></li><li id="n-featuredcontent" class="mw-list-item"><a href="/wiki/Portal:Conte%C3%BAdo_destacado"><span>Conteúdo destacado</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Eventos_atuais" title="Informação temática sobre eventos atuais"><span>Eventos atuais</span></a></li><li id="n-villagepump" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:Esplanada"><span>Esplanada</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Especial:Aleat%C3%B3ria" title="Carregar página aleatória [x]" accesskey="x"><span>Página aleatória</span></a></li><li id="n-portals" class="mw-list-item"><a href="/wiki/Portal:%C3%8Dndice"><span>Portais</span></a></li><li id="n-bug_in_article" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:Informe_um_erro"><span>Informar um erro</span></a></li> </ul> </div> </div> <div id="p-interaction" class="vector-menu mw-portlet mw-portlet-interaction" > <div class="vector-menu-heading"> Colaboração </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-welcome" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:Boas-vindas"><span>Boas-vindas</span></a></li><li id="n-help" class="mw-list-item"><a href="/wiki/Ajuda:P%C3%A1gina_principal" title="Um local reservado para auxílio."><span>Ajuda</span></a></li><li id="n-Páginas-de-testes-públicas" class="mw-list-item"><a href="/wiki/Ajuda:P%C3%A1gina_de_testes"><span>Páginas de testes públicas</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:Portal_comunit%C3%A1rio" title="Sobre o projeto"><span>Portal comunitário</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Especial:Mudan%C3%A7as_recentes" title="Uma lista de mudanças recentes nesta wiki [r]" accesskey="r"><span>Mudanças recentes</span></a></li><li id="n-maintenance" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:Manuten%C3%A7%C3%A3o"><span>Manutenção</span></a></li><li id="n-createpage" class="mw-list-item"><a href="/wiki/Ajuda:Guia_de_edi%C3%A7%C3%A3o/Como_come%C3%A7ar_uma_p%C3%A1gina"><span>Criar página</span></a></li><li id="n-newpages-description" class="mw-list-item"><a href="/wiki/Especial:P%C3%A1ginas_novas"><span>Páginas novas</span></a></li><li id="n-contact-description" class="mw-list-item"><a href="/wiki/Wikip%C3%A9dia:Contato"><span>Contato</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Wikip%C3%A9dia:P%C3%A1gina_principal" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipédia" src="/static/images/mobile/copyright/wikipedia-wordmark-fr.svg" style="width: 7.4375em; height: 1.125em;"> <img class="mw-logo-tagline" alt="" src="/static/images/mobile/copyright/wikipedia-tagline-pt.svg" width="120" height="13" style="width: 7.5em; height: 0.8125em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Especial:Pesquisar" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Pesquisar na Wikipédia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Busca</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Pesquisar na Wikipédia" aria-label="Pesquisar na Wikipédia" autocapitalize="sentences" title="Pesquisar na Wikipédia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Especial:Pesquisar"> </div> <button class="cdx-button cdx-search-input__end-button">Pesquisar</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Ferramentas pessoais"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Aspeto"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Aspeto" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Aspeto</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=20120521SB001&uselang=pt" class=""><span>Donativos</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Especial:Criar_conta&returnto=Sinais+de+mais+e+menos" title="É encorajado a criar uma conta e iniciar sessão; no entanto, não é obrigatório" class=""><span>Criar uma conta</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Especial:Entrar&returnto=Sinais+de+mais+e+menos" title="Aconselhamos-lhe a criar uma conta na Wikipédia, embora tal não seja obrigatório. [o]" accesskey="o" class=""><span>Entrar</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Mais opções" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Ferramentas pessoais" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Ferramentas pessoais</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Menu do utilizador" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=20120521SB001&uselang=pt"><span>Donativos</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Especial:Criar_conta&returnto=Sinais+de+mais+e+menos" title="É encorajado a criar uma conta e iniciar sessão; no entanto, não é obrigatório"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Criar uma conta</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Especial:Entrar&returnto=Sinais+de+mais+e+menos" title="Aconselhamos-lhe a criar uma conta na Wikipédia, embora tal não seja obrigatório. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Entrar</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Páginas para editores sem sessão iniciada <a href="/wiki/Ajuda:Introduction" aria-label="Saiba mais sobre edição"><span>saber mais</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Especial:Minhas_contribui%C3%A7%C3%B5es" title="Uma lista de edições feitas a partir deste endereço IP [y]" accesskey="y"><span>Contribuições</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Especial:Minha_discuss%C3%A3o" title="Discussão sobre edições feitas a partir deste endereço IP [n]" accesskey="n"><span>Discussão</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"><div id="mw-dismissablenotice-anonplace"></div><script>(function(){var node=document.getElementById("mw-dismissablenotice-anonplace");if(node){node.outerHTML="\u003Cdiv class=\"mw-dismissable-notice\"\u003E\u003Cdiv class=\"mw-dismissable-notice-close\"\u003E[\u003Ca tabindex=\"0\" role=\"button\"\u003Eocultar\u003C/a\u003E]\u003C/div\u003E\u003Cdiv class=\"mw-dismissable-notice-body\"\u003E\u003C!-- CentralNotice --\u003E\u003Cdiv id=\"localNotice\" data-nosnippet=\"\"\u003E\u003Cdiv class=\"anonnotice\" lang=\"pt\" dir=\"ltr\"\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E\u003C/div\u003E";}}());</script></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="''Site''"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Conteúdo" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Conteúdo</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">mover para a barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">ocultar</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Início</div> </a> </li> <li id="toc-História" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#História"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>História</span> </div> </a> <ul id="toc-História-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sinal_de_mais" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Sinal_de_mais"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Sinal de mais</span> </div> </a> <ul id="toc-Sinal_de_mais-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sinal_de_menos" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Sinal_de_menos"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Sinal de menos</span> </div> </a> <ul id="toc-Sinal_de_menos-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referências" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referências"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Referências</span> </div> </a> <ul id="toc-Referências-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Conteúdo" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Alternar o índice" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Alternar o índice</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Sinais de mais e menos</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Ir para um artigo noutra língua. Disponível em 24 línguas" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-24" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">24 línguas</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B9%D9%84%D8%A7%D9%85%D8%AA%D8%A7_%D8%B2%D8%A7%D8%A6%D8%AF_%D9%88%D9%86%D8%A7%D9%82%D8%B5" title="علامتا زائد وناقص — árabe" lang="ar" hreflang="ar" data-title="علامتا زائد وناقص" data-language-autonym="العربية" data-language-local-name="árabe" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%A7%E0%A6%A8%E0%A6%9A%E0%A6%BF%E0%A6%B9%E0%A7%8D%E0%A6%A8_%E0%A6%93_%E0%A6%8B%E0%A6%A3%E0%A6%9A%E0%A6%BF%E0%A6%B9%E0%A7%8D%E0%A6%A8" title="ধনচিহ্ন ও ঋণচিহ্ন — bengalês" lang="bn" hreflang="bn" data-title="ধনচিহ্ন ও ঋণচিহ্ন" data-language-autonym="বাংলা" data-language-local-name="bengalês" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Signes_m%C3%A9s_i_menys" title="Signes més i menys — catalão" lang="ca" hreflang="ca" data-title="Signes més i menys" data-language-autonym="Català" data-language-local-name="catalão" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Znam%C3%A9nka_plus_a_minus" title="Znaménka plus a minus — checo" lang="cs" hreflang="cs" data-title="Znaménka plus a minus" data-language-autonym="Čeština" data-language-local-name="checo" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Plus_and_minus_signs" title="Plus and minus signs — inglês" lang="en" hreflang="en" data-title="Plus and minus signs" data-language-autonym="English" data-language-local-name="inglês" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Signos_m%C3%A1s_y_menos" title="Signos más y menos — espanhol" lang="es" hreflang="es" data-title="Signos más y menos" data-language-autonym="Español" data-language-local-name="espanhol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B9%D9%84%D8%A7%D9%85%D8%AA%E2%80%8C%D9%87%D8%A7%DB%8C_%D9%85%D8%AB%D8%A8%D8%AA_%D9%88_%D9%85%D9%86%D9%81%DB%8C" title="علامت‌های مثبت و منفی — persa" lang="fa" hreflang="fa" data-title="علامت‌های مثبت و منفی" data-language-autonym="فارسی" data-language-local-name="persa" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Signes_plus_et_moins" title="Signes plus et moins — francês" lang="fr" hreflang="fr" data-title="Signes plus et moins" data-language-autonym="Français" data-language-local-name="francês" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Signos_m%C3%A1is_e_menos" title="Signos máis e menos — galego" lang="gl" hreflang="gl" data-title="Signos máis e menos" data-language-autonym="Galego" data-language-local-name="galego" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A4%D7%9C%D7%95%D7%A1_%D7%95%D7%9E%D7%99%D7%A0%D7%95%D7%A1" title="פלוס ומינוס — hebraico" lang="he" hreflang="he" data-title="פלוס ומינוס" data-language-autonym="עברית" data-language-local-name="hebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/El%C5%91jel" title="Előjel — húngaro" lang="hu" hreflang="hu" data-title="Előjel" data-language-autonym="Magyar" data-language-local-name="húngaro" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%8A%D5%AC%D5%B5%D5%B8%D6%82%D5%BD_%D6%87_%D5%B4%D5%AB%D5%B6%D5%B8%D6%82%D5%BD_%D5%B6%D5%B7%D5%A1%D5%B6%D5%B6%D5%A5%D6%80" title="Պլյուս և մինուս նշաններ — arménio" lang="hy" hreflang="hy" data-title="Պլյուս և մինուս նշաններ" data-language-autonym="Հայերեն" data-language-local-name="arménio" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Tanda_plus_dan_minus" title="Tanda plus dan minus — indonésio" lang="id" hreflang="id" data-title="Tanda plus dan minus" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonésio" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%83%97%E3%83%A9%E3%82%B9%E8%A8%98%E5%8F%B7%E3%81%A8%E3%83%9E%E3%82%A4%E3%83%8A%E3%82%B9%E8%A8%98%E5%8F%B7" title="プラス記号とマイナス記号 — japonês" lang="ja" hreflang="ja" data-title="プラス記号とマイナス記号" data-language-autonym="日本語" data-language-local-name="japonês" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%8D%94%ED%95%98%EA%B8%B0%ED%91%9C%EC%99%80_%EB%B9%BC%EA%B8%B0%ED%91%9C" title="더하기표와 빼기표 — coreano" lang="ko" hreflang="ko" data-title="더하기표와 빼기표" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Plus_i_minus" title="Plus i minus — polaco" lang="pl" hreflang="pl" data-title="Plus i minus" data-language-autonym="Polski" data-language-local-name="polaco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%97%D0%BD%D0%B0%D0%BA%D0%B8_%D0%BF%D0%BB%D1%8E%D1%81%D0%B0_%D0%B8_%D0%BC%D0%B8%D0%BD%D1%83%D1%81%D0%B0" title="Знаки плюса и минуса — russo" lang="ru" hreflang="ru" data-title="Знаки плюса и минуса" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%95%E0%AF%82%E0%AE%9F%E0%AF%8D%E0%AE%9F%E0%AE%B2%E0%AF%8D,_%E0%AE%95%E0%AE%B4%E0%AE%BF%E0%AE%A4%E0%AF%8D%E0%AE%A4%E0%AE%B2%E0%AF%8D_%E0%AE%95%E0%AF%81%E0%AE%B1%E0%AE%BF%E0%AE%95%E0%AE%B3%E0%AF%8D" title="கூட்டல், கழித்தல் குறிகள் — tâmil" lang="ta" hreflang="ta" data-title="கூட்டல், கழித்தல் குறிகள்" data-language-autonym="தமிழ்" data-language-local-name="tâmil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B9%80%E0%B8%84%E0%B8%A3%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B8%87%E0%B8%AB%E0%B8%A1%E0%B8%B2%E0%B8%A2%E0%B8%9A%E0%B8%A7%E0%B8%81%E0%B9%81%E0%B8%A5%E0%B8%B0%E0%B8%A5%E0%B8%9A" title="เครื่องหมายบวกและลบ — tailandês" lang="th" hreflang="th" data-title="เครื่องหมายบวกและลบ" data-language-autonym="ไทย" data-language-local-name="tailandês" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Art%C4%B1_ve_eksi_i%C5%9Faretleri" title="Artı ve eksi işaretleri — turco" lang="tr" hreflang="tr" data-title="Artı ve eksi işaretleri" data-language-autonym="Türkçe" data-language-local-name="turco" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%97%D0%BD%D0%B0%D0%BA%D0%B8_%D0%BF%D0%BB%D1%8E%D1%81_%D1%96_%D0%BC%D1%96%D0%BD%D1%83%D1%81" title="Знаки плюс і мінус — ucraniano" lang="uk" hreflang="uk" data-title="Знаки плюс і мінус" data-language-autonym="Українська" data-language-local-name="ucraniano" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-xh mw-list-item"><a href="https://xh.wikipedia.org/wiki/Iimpawu_zokudibanisa_nokuthabatha" title="Iimpawu zokudibanisa nokuthabatha — xosa" lang="xh" hreflang="xh" data-title="Iimpawu zokudibanisa nokuthabatha" data-language-autonym="IsiXhosa" data-language-local-name="xosa" class="interlanguage-link-target"><span>IsiXhosa</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%8A%A0%E5%8F%B7%E4%B8%8E%E5%87%8F%E5%8F%B7" title="加号与减号 — chinês" lang="zh" hreflang="zh" data-title="加号与减号" data-language-autonym="中文" data-language-local-name="chinês" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E5%8A%A0%E6%B8%9B%E8%99%9F" title="加減號 — cantonês" lang="yue" hreflang="yue" data-title="加減號" data-language-autonym="粵語" data-language-local-name="cantonês" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q747083#sitelinks-wikipedia" title="Editar hiperligações interlínguas" class="wbc-editpage">Editar hiperligações</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Espaços nominais"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Sinais_de_mais_e_menos" title="Ver a página de conteúdo [c]" accesskey="c"><span>Artigo</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Discuss%C3%A3o:Sinais_de_mais_e_menos" rel="discussion" title="Discussão sobre o conteúdo da página [t]" accesskey="t"><span>Discussão</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Mudar a variante da língua" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">português</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Vistas"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Sinais_de_mais_e_menos"><span>Ler</span></a></li><li id="ca-ve-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Sinais_de_mais_e_menos&veaction=edit" title="Editar esta página [v]" accesskey="v"><span>Editar</span></a></li><li id="ca-edit" class="collapsible vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Sinais_de_mais_e_menos&action=edit" title="Editar o código-fonte desta página [e]" accesskey="e"><span>Editar código-fonte</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Sinais_de_mais_e_menos&action=history" title="Edições anteriores desta página. [h]" accesskey="h"><span>Ver histórico</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Ferramentas de página"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Ferramentas" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Ferramentas</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Ferramentas</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">mover para a barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">ocultar</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Mais opções" > <div class="vector-menu-heading"> Operações </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Sinais_de_mais_e_menos"><span>Ler</span></a></li><li id="ca-more-ve-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Sinais_de_mais_e_menos&veaction=edit" title="Editar esta página [v]" accesskey="v"><span>Editar</span></a></li><li id="ca-more-edit" class="collapsible vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Sinais_de_mais_e_menos&action=edit" title="Editar o código-fonte desta página [e]" accesskey="e"><span>Editar código-fonte</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Sinais_de_mais_e_menos&action=history"><span>Ver histórico</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> Geral </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" class="mw-list-item"><a href="/wiki/Especial:P%C3%A1ginas_afluentes/Sinais_de_mais_e_menos" title="Lista de todas as páginas que contêm hiperligações para esta [j]" accesskey="j"><span>Páginas afluentes</span></a></li><li id="t-recentchangeslinked" class="mw-list-item"><a href="/wiki/Especial:Altera%C3%A7%C3%B5es_relacionadas/Sinais_de_mais_e_menos" rel="nofollow" title="Mudanças recentes nas páginas para as quais esta contém hiperligações [k]" accesskey="k"><span>Alterações relacionadas</span></a></li><li id="t-upload" class="mw-list-item"><a href="/wiki/Wikipedia:Carregar_ficheiro" title="Carregar ficheiros [u]" accesskey="u"><span>Carregar ficheiro</span></a></li><li id="t-specialpages" class="mw-list-item"><a href="/wiki/Especial:P%C3%A1ginas_especiais" title="Lista de páginas especiais [q]" accesskey="q"><span>Páginas especiais</span></a></li><li id="t-permalink" class="mw-list-item"><a href="/w/index.php?title=Sinais_de_mais_e_menos&oldid=62004163" title="Hiperligação permanente para esta revisão desta página"><span>Hiperligação permanente</span></a></li><li id="t-info" class="mw-list-item"><a href="/w/index.php?title=Sinais_de_mais_e_menos&action=info" title="Mais informações sobre esta página"><span>Informações da página</span></a></li><li id="t-cite" class="mw-list-item"><a href="/w/index.php?title=Especial:Citar&page=Sinais_de_mais_e_menos&id=62004163&wpFormIdentifier=titleform" title="Informação sobre como citar esta página"><span>Citar esta página</span></a></li><li id="t-urlshortener" class="mw-list-item"><a href="/w/index.php?title=Especial:UrlShortener&url=https%3A%2F%2Fpt.wikipedia.org%2Fwiki%2FSinais_de_mais_e_menos"><span>Obter URL encurtado</span></a></li><li id="t-urlshortener-qrcode" class="mw-list-item"><a href="/w/index.php?title=Especial:QrCode&url=https%3A%2F%2Fpt.wikipedia.org%2Fwiki%2FSinais_de_mais_e_menos"><span>Descarregar código QR</span></a></li> </ul> </div> </div> <div id="p-coll-print_export" class="vector-menu mw-portlet mw-portlet-coll-print_export" > <div class="vector-menu-heading"> Imprimir/exportar </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="coll-create_a_book" class="mw-list-item"><a href="/w/index.php?title=Especial:Livro&bookcmd=book_creator&referer=Sinais+de+mais+e+menos"><span>Criar um livro</span></a></li><li id="coll-download-as-rl" class="mw-list-item"><a href="/w/index.php?title=Especial:DownloadAsPdf&page=Sinais_de_mais_e_menos&action=show-download-screen"><span>Descarregar como PDF</span></a></li><li id="t-print" class="mw-list-item"><a href="/w/index.php?title=Sinais_de_mais_e_menos&printable=yes" title="Versão para impressão desta página [p]" accesskey="p"><span>Versão para impressão</span></a></li> </ul> </div> </div> <div id="p-wikibase-otherprojects" class="vector-menu mw-portlet mw-portlet-wikibase-otherprojects" > <div class="vector-menu-heading"> Noutros projetos </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-wikibase" class="wb-otherproject-link wb-otherproject-wikibase-dataitem mw-list-item"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q747083" title="Hiperligação para o elemento do repositório de dados [g]" accesskey="g"><span>Elemento Wikidata</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> </div> </div> </div> <div class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="Ferramentas de página"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="Aspeto"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">Aspeto</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">mover para a barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">ocultar</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Origem: Wikipédia, a enciclopédia livre.</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="pt" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r68971778">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}.mw-parser-output .cmbox{margin:3px 0;border-collapse:collapse;border:1px solid #a2a9b1;background-color:#dfe8ff;box-sizing:border-box;color:var(--color-base)}.mw-parser-output .cmbox-speedy{border:4px solid #b32424;background-color:#ffdbdb}.mw-parser-output .cmbox-delete{background-color:#ffdbdb}.mw-parser-output .cmbox-content{background-color:#ffe7ce}.mw-parser-output .cmbox-style{background-color:#fff9db}.mw-parser-output .cmbox-move{background-color:#e4d8ff}.mw-parser-output .cmbox-protection{background-color:#efefe1}.mw-parser-output .cmbox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .cmbox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .cmbox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .cmbox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .cmbox .mbox-invalid-type{text-align:center}@media(min-width:720px){.mw-parser-output .cmbox{margin:3px 10%}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .cmbox{background-color:#0d1a27}html.skin-theme-clientpref-night .mw-parser-output .cmbox-speedy,html.skin-theme-clientpref-night .mw-parser-output .cmbox-delete{background-color:#300}html.skin-theme-clientpref-night .mw-parser-output .cmbox-content{background-color:#331a00}html.skin-theme-clientpref-night .mw-parser-output .cmbox-style{background-color:#332b00}html.skin-theme-clientpref-night .mw-parser-output .cmbox-move{background-color:#08001a}html.skin-theme-clientpref-night .mw-parser-output .cmbox-protection{background-color:#212112}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cmbox{background-color:#0d1a27}html.skin-theme-clientpref-os .mw-parser-output .cmbox-speedy,html.skin-theme-clientpref-os .mw-parser-output .cmbox-delete{background-color:#300}html.skin-theme-clientpref-os .mw-parser-output .cmbox-content{background-color:#331a00}html.skin-theme-clientpref-os .mw-parser-output .cmbox-style{background-color:#332b00}html.skin-theme-clientpref-os .mw-parser-output .cmbox-move{background-color:#08001a}html.skin-theme-clientpref-os .mw-parser-output .cmbox-protection{background-color:#212112}}.mw-parser-output .fmbox{clear:both;margin:0.2em 0;width:100%;border:1px solid #a2a9b1;background-color:var(--background-color-interactive-subtle,#f8f9fa);box-sizing:border-box;color:var(--color-base,#202122)}.mw-parser-output .fmbox-warning{border:1px solid #bb7070;background-color:#ffdbdb}.mw-parser-output .fmbox-editnotice{background-color:transparent}.mw-parser-output .fmbox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .fmbox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .fmbox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .fmbox .mbox-invalid-type{text-align:center}@media screen{html.skin-theme-clientpref-night .mw-parser-output .fmbox-warning{background-color:#683131}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .fmbox-warning{background-color:#683131}}.mw-parser-output .imbox{margin:4px 0;border-collapse:collapse;border:3px solid #36c;background-color:var(--background-color-interactive-subtle,#f8f9fa);box-sizing:border-box}.mw-parser-output .imbox .mbox-text .imbox{margin:0 -0.5em;display:block}.mw-parser-output .imbox-speedy{border:3px solid #b32424;background-color:#fee7e6}.mw-parser-output .imbox-delete{border:3px solid #b32424}.mw-parser-output .imbox-content{border:3px solid #f28500}.mw-parser-output .imbox-style{border:3px solid #fc3}.mw-parser-output .imbox-move{border:3px solid #9932cc}.mw-parser-output .imbox-protection{border:3px solid #a2a9b1}.mw-parser-output .imbox-license{border:3px solid #88a}.mw-parser-output .imbox-featured{border:3px solid #cba135}.mw-parser-output .imbox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .imbox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .imbox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .imbox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .imbox .mbox-invalid-type{text-align:center}@media(min-width:720px){.mw-parser-output .imbox{margin:4px 10%}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .imbox-speedy{background-color:#310402}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .imbox-speedy{background-color:#310402}}.mw-parser-output .ombox{margin:4px 0;border-collapse:collapse;background-color:var(--background-color-neutral-subtle,#f8f9fa);box-sizing:border-box;border:1px solid #a2a9b1;color:var(--color-base,#202122)}.mw-parser-output .ombox.mbox-small{font-size:88%;line-height:1.25em}.mw-parser-output .ombox-speedy{border:2px solid #b32424;background-color:#fee7e6}.mw-parser-output .ombox-delete{border:2px solid #b32424}.mw-parser-output .ombox-content{border:1px solid #f28500}.mw-parser-output .ombox-style{border:1px solid #fc3}.mw-parser-output .ombox-move{border:1px solid #9932cc}.mw-parser-output .ombox-protection{border:2px solid #a2a9b1}.mw-parser-output .ombox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .ombox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .ombox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .ombox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ombox .mbox-invalid-type{text-align:center}@media(min-width:720px){.mw-parser-output .ombox{margin:4px 10%}.mw-parser-output .ombox.mbox-small{clear:right;float:right;margin:4px 0 4px 1em;width:238px}}body.skin--responsive .mw-parser-output table.ombox img{max-width:none!important}@media screen{html.skin-theme-clientpref-night .mw-parser-output .ombox-speedy{background-color:#310402}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .ombox-speedy{background-color:#310402}}.mw-parser-output .tmbox{margin:4px 0;border-collapse:collapse;border:1px solid #c0c090;background-color:#f8eaba;box-sizing:border-box}.mw-parser-output .tmbox.mbox-small{font-size:88%;line-height:1.25em}.mw-parser-output .tmbox-speedy{border:2px solid #b32424;background-color:#fee7e6}.mw-parser-output .tmbox-delete{border:2px solid #b32424}.mw-parser-output .tmbox-content{border:1px solid #c0c090}.mw-parser-output .tmbox-style{border:2px solid #fc3}.mw-parser-output .tmbox-move{border:2px solid #9932cc}.mw-parser-output .tmbox .mbox-text{border:none;padding:0.25em 0.9em;width:100%}.mw-parser-output .tmbox .mbox-image{border:none;padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .tmbox .mbox-imageright{border:none;padding:2px 0.9em 2px 0;text-align:center}.mw-parser-output .tmbox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .tmbox .mbox-invalid-type{text-align:center}@media(min-width:720px){.mw-parser-output .tmbox{margin:4px 10%}.mw-parser-output .tmbox.mbox-small{clear:right;float:right;margin:4px 0 4px 1em;width:238px}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .tmbox{background-color:#2e2505}html.skin-theme-clientpref-night .mw-parser-output .tmbox-speedy{background-color:#310402}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .tmbox{background-color:#2e2505}html.skin-theme-clientpref-os .mw-parser-output .tmbox-speedy{background-color:#310402}}body.skin--responsive .mw-parser-output table.tmbox img{max-width:none!important}</style><table class="box-Mais_notas plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div style="width:52px"><span typeof="mw:File"><a href="/wiki/Ficheiro:Question_book-new.svg" class="mw-file-description"><img alt="Esta página cita fontes, mas não cobrem todo o conteúdo" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">Esta página <a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Cite_as_fontes" title="Wikipédia:Livro de estilo/Cite as fontes">cita fontes</a>, mas que <b><a href="/wiki/Wikip%C3%A9dia:V" class="mw-redirect" title="Wikipédia:V">não cobrem</a> todo o conteúdo</b>.<span class="hide-when-compact"> Ajude a <a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Refer%C3%AAncias_e_notas_de_rodap%C3%A9" title="Wikipédia:Livro de estilo/Referências e notas de rodapé">inserir referências</a> (<small><i>Encontre fontes:</i> <span class="plainlinks"><a rel="nofollow" class="external text" href="https://wikipedialibrary.wmflabs.org/">ABW</a>  •  <a rel="nofollow" class="external text" href="https://www.periodicos.capes.gov.br">CAPES</a>  •  <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&as_epq=Sinais+de+mais+e+menos">Google</a> (<a rel="nofollow" class="external text" href="https://www.google.com/search?hl=pt&tbm=nws&q=Sinais+de+mais+e+menos&oq=Sinais+de+mais+e+menos">N</a> • <a rel="nofollow" class="external text" href="http://books.google.com/books?&as_brr=0&as_epq=Sinais+de+mais+e+menos">L</a> • <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?hl=pt&q=Sinais+de+mais+e+menos">A</a>)</span></small>).</span> <small class="date-container"><i>(<span class="date">Setembro de 2021</span>)</i></small></div></td></tr></tbody></table> <table class="vertical-navbox nowraplinks" cellspacing="5" cellpadding="0" style="float:right;clear:right;width:20.8em;margin:0 0 1.0em 1.0em;background-color: var(--background-color-neutral-subtle,#f9f9f9); color:inherit; border:1px solid #aaa;padding:0.2em;border-spacing:0.4em 0;text-align:center;line-height:1.4em;font-size:88%;min-width:20.8em;"><tbody><tr><th class="" style="padding:0.2em 0.4em 0.2em;;font-size:145%;line-height:1.2em;">Sinais tipográficos</th> </tr><tr> <th class="" style="padding:0.1em; background-color:#CCCCCC; text-align: center;;">Sinais gráficos</th> </tr><tr> <td class="" style="padding:0 0.1em 0.4em; ;"> <table style="width:100%;border-collapse:collapse;border-spacing:0px 0px;border:none;line-height:1.3em;"><tbody><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Ap%C3%B3strofo" title="Apóstrofo">apóstrofo</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ’<b> </b>'</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Par%C3%AAntese" title="Parêntese">parênteses</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ()</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Colchete" title="Colchete">colchetes ou parênteses retos</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> [ ]</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Chave_(pontua%C3%A7%C3%A3o)" title="Chave (pontuação)">chaves ou chavetas</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> {}</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Dois-pontos" title="Dois-pontos">dois-pontos</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> <b>:</b></td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/V%C3%ADrgula" title="Vírgula">vírgula</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> <b>,</b></td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Travess%C3%A3o" title="Travessão">travessão</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> —</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Meia-risca" title="Meia-risca">meia-risca</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> –</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/H%C3%ADfen" title="Hífen">hífen</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ‐</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Retic%C3%AAncias" title="Reticências">reticências</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> …<span class="nowrap"> </span>...<span class="nowrap"> </span>. . .</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Ponto_final" title="Ponto final">ponto final</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> .</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Ponto_de_exclama%C3%A7%C3%A3o" title="Ponto de exclamação">ponto de exclamação</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> !</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Pontos_de_interroga%C3%A7%C3%A3o_e_de_exclama%C3%A7%C3%A3o_invertidos" title="Pontos de interrogação e de exclamação invertidos">ponto de exclamação invertido</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ¡</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Ponto_de_interroga%C3%A7%C3%A3o" title="Ponto de interrogação">ponto de interrogação</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ?</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Interrobangue" title="Interrobangue">interrobangue</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ‽</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Pontos_de_interroga%C3%A7%C3%A3o_e_de_exclama%C3%A7%C3%A3o_invertidos" title="Pontos de interrogação e de exclamação invertidos">ponto de interrogação invertido</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ¿</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Til" title="Til">til</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ~</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Ponto_e_v%C3%ADrgula" title="Ponto e vírgula">ponto e vírgula</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> <b>;</b></td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Barra_(caractere)" title="Barra (caractere)">barra</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> /</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Ponto_mediano" title="Ponto mediano">ponto mediano</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> <b>·</b></td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Espa%C3%A7o_(sinal)" title="Espaço (sinal)">espaço</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> <span style="background-color: #CEEEF2"> </span>  <span style="background-color: #CEEEF2"> </span>  <span style="background-color: #CEEEF2"> </span></td></tr></tbody></table></td> </tr><tr> <th class="" style="padding:0.1em; background-color:#CCCCCC; text-align: center;;">Símbolos matemáticos</th> </tr><tr> <td class="" style="padding:0 0.1em 0.4em; ;"> <table style="width:100%;border-collapse:collapse;border-spacing:0px 0px;border:none;line-height:1.3em;"><tbody><tr style="vertical-align:top"><td style="text-align:left;"> <a class="mw-selflink-fragment" href="#Sinal_de_mais">mais</a> e de <a class="mw-selflink-fragment" href="#Sinal_de_menos">menos</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> + −</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Multiplica%C3%A7%C3%A3o" title="Multiplicação">sinais de multiplicação</a> e <a href="/wiki/Divis%C3%A3o" title="Divisão">divisão</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> × ÷</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Sinal_de_igual" title="Sinal de igual">sinal de igual</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> =</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Sinal_de_mais_ou_menos" title="Sinal de mais ou menos">mais ou menos, menos ou mais</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ± ∓</td></tr></tbody></table></td> </tr><tr> <th class="" style="padding:0.1em;;background-color:#CCCCCC; text-align: center;;">Símbolos monetários</th> </tr><tr> <td class="" style="padding:0 0.1em 0.4em; ;"> <table style="width:100%;border-collapse:collapse;border-spacing:0px 0px;border:none;line-height:1.3em;"><tbody><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Moeda_(tipografia)" title="Moeda (tipografia)">moeda</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ¤</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/D%C3%B3lar_(sinal)" title="Dólar (sinal)">Dólar/Peso</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> $</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/C%C3%AAntimo" title="Cêntimo">Cêntimo</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ¢</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Libra_esterlina" title="Libra esterlina">Libra esterlina</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> £</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Iene" title="Iene">Iene</a>/<a href="/wiki/Renminbi" title="Renminbi">Renminbi</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ¥</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Euro" title="Euro">Euro</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> €</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Won" title="Won">Won</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ₩</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Bitcoin" title="Bitcoin">Bitcoin</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ₿<b></b></td></tr></tbody></table></td> </tr><tr> <th class="" style="padding:0.1em;;background-color:#CCCCCC; text-align: center;;">Outros sinais tipográficos</th> </tr><tr> <td class="" style="padding:0 0.1em 0.4em; ;"> <table style="width:100%;border-collapse:collapse;border-spacing:0px 0px;border:none;line-height:1.3em;"><tbody><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/%26" title="&">"E" comercial ou <i>ampersand</i></a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> &</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Asterisco" title="Asterisco">asterisco</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> *</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/S%C3%ADmbolo_de_direitos_autorais" title="Símbolo de direitos autorais">símbolo de direitos autorais</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ©</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Marca_registrada" title="Marca registrada">marca registrada comercial</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ®</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/@" class="mw-redirect" title="@">arroba</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> @</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Aspas" title="Aspas">aspas</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> “”</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Barra_inversa" title="Barra inversa">barra inversa ou contrabarra</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> \</td></tr><tr style="vertical-align:top"><td style="text-align:left;"><i><a href="/wiki/Chevron_(tipografia)" title="Chevron (tipografia)">chevron</a></i></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> <></td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Ponto_lista" title="Ponto lista">ponto lista</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> •</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Obelisco_(tipografia)" title="Obelisco (tipografia)">obelisco</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> †<b> </b>‡</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Grau_(s%C3%ADmbolo)" title="Grau (símbolo)">grau</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> °</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Indicador_ordinal" title="Indicador ordinal">indicador ordinal</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> .º<b> </b>.ª</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Cerquilha" title="Cerquilha">cerquilha ou cardinal</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> #</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Plica" title="Plica">plica</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ′</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Par%C3%A1grafo_(s%C3%ADmbolo)" title="Parágrafo (símbolo)">parágrafo</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> §</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/P%C3%A9_de_mosca" title="Pé de mosca">pé de mosca</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ¶</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Porcentagem" title="Porcentagem">porcentagem</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> %</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Underscore" class="mw-redirect" title="Underscore">traço inferior</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> _</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Barra_vertical" title="Barra vertical">barra vertical ou <i>pipe</i></a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> |</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Sinal_de_conclus%C3%A3o" title="Sinal de conclusão">sinal de conclusão</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> ∴</td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Idem" title="Idem">sinal de idem</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> <b>”</b></td></tr><tr style="vertical-align:top"><td style="text-align:left;"> <a href="/wiki/Dois_pontos_triangulares" title="Dois pontos triangulares">dois pontos triangulares</a></td><td style="text-align:right;font-size:125%;line-height:0.8em;vertical-align:middle;white-space:nowrap;"> <b>ː</b></td></tr></tbody></table></td> </tr><tr> <th class="" style="padding:0.1em;;background-color:#CCCCCC; text-align: center;;">Relacionados</th> </tr><tr> <td class="" style="padding:0 0.1em 0.4em; ;"> <div class="hlist hlist-separated"><ul><li><a href="/wiki/Diacr%C3%ADtico" title="Diacrítico">diacríticos</a></li><li><a href="/wiki/Lista_de_s%C3%ADmbolos_l%C3%B3gicos" title="Lista de símbolos lógicos">símbolos lógicos</a></li><li><a href="/wiki/Lista_de_s%C3%ADmbolos_matem%C3%A1ticos" title="Lista de símbolos matemáticos">símbolos matemáticos</a></li></ul></div></td> </tr><tr><td style="text-align:right;font-size:115%;"><div class="plainlinks hlist navbar mini"><ul><li class="nv-ver"><a href="/wiki/Predefini%C3%A7%C3%A3o:Pontua%C3%A7%C3%A3o" title="Predefinição:Pontuação"><abbr title="Ver esta predefinição">v</abbr></a></li><li class="nv-discutir"><a href="/wiki/Predefini%C3%A7%C3%A3o_Discuss%C3%A3o:Pontua%C3%A7%C3%A3o" title="Predefinição Discussão:Pontuação"><abbr title="Discutir esta predefinição">d</abbr></a></li><li class="nv-editar"><a class="external text" href="https://pt.wikipedia.org/w/index.php?title=Predefini%C3%A7%C3%A3o:Pontua%C3%A7%C3%A3o&action=edit"><abbr title="Editar esta predefinição">e</abbr></a></li></ul></div></td> </tr> </tbody></table> <p>Os <b>sinais de mais e de menos</b> (<b>+</b> e <b>−</b>) são <a href="/wiki/Tabela_de_s%C3%ADmbolos_matem%C3%A1ticos" class="mw-redirect" title="Tabela de símbolos matemáticos">símbolos matemáticos</a> usados para representar as noções de <a href="/wiki/N%C3%BAmero_negativo" title="Número negativo">positivos e negativos</a>, bem como as operações de <a href="/wiki/Adi%C3%A7%C3%A3o" title="Adição">adição</a> e <a href="/wiki/Subtra%C3%A7%C3%A3o" title="Subtração">subtração</a>. Seu uso foi estendido para muitos outros significados similares. Em <a href="/wiki/Latim" title="Latim">latim</a>, os termos "mais" e "menos" correspondem a <b>plus</b> e <b>minus</b> respectivamente. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="História"><span id="Hist.C3.B3ria"></span>História</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sinais_de_mais_e_menos&veaction=edit&section=1" title="Editar secção: História" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sinais_de_mais_e_menos&action=edit&section=1" title="Editar código-fonte da secção: História"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Embora os sinais pareçam agora tão familiares como o <a href="/wiki/Alfabeto" title="Alfabeto">alfabeto</a> ou os <a href="/wiki/Algarismos_indo-ar%C3%A1bicos" class="mw-redirect" title="Algarismos indo-arábicos">numerais indo-arábicos</a>, eles não são de grande antiguidade. O sinal para adição em <a href="/wiki/Hier%C3%B3glifo_eg%C3%ADpcio" class="mw-redirect" title="Hieróglifo egípcio">hieróglifo egípcio</a>, por exemplo, parecia um par de pernas caminhando na direção em que o texto foi escrito (na <a href="/wiki/L%C3%ADngua_eg%C3%ADpcia" title="Língua egípcia">língua egípcia</a> se pode escrever da direita para a esquerda ou da esquerda para direita), com o sinal inverso, indicando subtração: </p> <table align="center"> <tbody><tr> <td><table class="mw-hiero-table mw-hiero-outer" dir="ltr"><tbody><tr><td> <table class="mw-hiero-table"><tbody><tr> <td><img class="skin-invert" style="margin: 1px;" src="/w/extensions/wikihiero/img/hiero_D54.png?75932" height="18" title="D54" alt="D54" /></td><td>ou</td><td><img class="skin-invert" style="margin: 1px;" src="/w/extensions/wikihiero/img/hiero_D55.png?34f6c" height="18" title="D55" alt="D55" /></td></tr></tbody></table> </td></tr></tbody></table> </td></tr></tbody></table> <p>Na Europa, no início do século XV as letras "P" e "M" eram geralmente usadas.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span>[</span>1<span>]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span>[</span>2<span>]</span></a></sup> Os símbolos (<a href="/w/index.php?title=P_com_barra&action=edit&redlink=1" class="new" title="P com barra (página não existe)">P com barra</a> para piu, ou seja, mais, e M com barra para meno, isto é menos) apareceram pela primeira vez no compêndio de matemática de <a href="/wiki/Luca_Pacioli" title="Luca Pacioli">Luca Pacioli</a>, <i>Summa de Arithmetica, Geometria, Proportioni et Proportionalita</i>, impresso pela primeira vez e publicado em <a href="/wiki/Veneza" title="Veneza">Veneza</a> em 1494.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span>[</span>3<span>]</span></a></sup> O <b>+</b> é uma simplificação do latim "et" (comparável ao <b><a href="/wiki/%26" title="&">&</a></b>). </p><p>O <b>−</b> pode ser derivado de um <a href="/wiki/Til" title="Til">til</a> escrito sobre o <b>m</b> quando usado para indicar a subtração; ou pode ter vindo de uma versão abreviada da letra m em si. Widmann refere aos símbolos − e + como <i>minus</i> e <i>mer</i> (Alemão moderno <i>mehr</i>; "mais"): "was − ist, das ist minus, und das + ist das mer". </p><p>Um livro publicado por <a href="/wiki/Henricus_Grammateus" title="Henricus Grammateus">Henricus Grammateus</a> em 1518 é o mais antigo encontrado a usar + e − para adição e subtração.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span>[</span>4<span>]</span></a></sup> </p><p><a href="/wiki/Robert_Recorde" title="Robert Recorde">Robert Recorde</a>, o criador do <a href="/wiki/Sinal_de_igual" title="Sinal de igual">sinal de igual</a>, introduziu mais e menos para a Grã-Bretanha em 1557, em <i><a href="/w/index.php?title=The_Whetstone_de_Witte&action=edit&redlink=1" class="new" title="The Whetstone de Witte (página não existe)">The Whetstone de Witte</a></i>: "Existem 2 outros sinais dos quais o primeiro é feito assim + e representa mais: o outro é, assim, − e representa menos". </p> <div class="mw-heading mw-heading2"><h2 id="Sinal_de_mais">Sinal de mais</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sinais_de_mais_e_menos&veaction=edit&section=2" title="Editar secção: Sinal de mais" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sinais_de_mais_e_menos&action=edit&section=2" title="Editar código-fonte da secção: Sinal de mais"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>O sinal de mais é um <a href="/wiki/Opera%C3%A7%C3%A3o_bin%C3%A1ria" title="Operação binária">operador binário</a> que indica <a href="/wiki/Adi%C3%A7%C3%A3o" title="Adição">adição</a>, como em 2 + 3 = 5. Também pode servir como um <a href="/wiki/Opera%C3%A7%C3%A3o_un%C3%A1ria" title="Operação unária">operador unário</a> que deixa o <a href="/wiki/Operando" title="Operando">operando</a> <a href="/wiki/Fun%C3%A7%C3%A3o_identidade" title="Função identidade">inalterado</a> (+<i>x</i> significa o mesmo que <i>x</i>). Esta notação pode ser utilizada quando se deseja enfatizar a positividade de um número, especialmente quando em contraste com o negativo (5 contra −5). </p><p>O sinal de mais também pode indicar muitas outras operações, dependendo do sistema matemático em causa. Muitas <a href="/wiki/Estrutura_alg%C3%A9brica" title="Estrutura algébrica">estruturas algébricas</a> têm alguma operação que se chama, ou é equivalente a, <a href="/wiki/Adi%C3%A7%C3%A3o" title="Adição">adição</a>. Além disso, o simbolismo foi estendido para operações muito diferentes. Mais pode significar: </p> <ul><li><a href="/wiki/Ou_exclusivo" title="Ou exclusivo">ou exclusivo</a> (usualmente escrito ⊕): 1 + 1 = 0, 1 + 0 = 1</li> <li><a href="/wiki/Disjun%C3%A7%C3%A3o_l%C3%B3gica" title="Disjunção lógica">disjunção lógica</a> (usualmente escrita ∨): 1 + 1 = 1, 1 + 0 = 1</li></ul> <div class="mw-heading mw-heading2"><h2 id="Sinal_de_menos">Sinal de menos</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Sinais_de_mais_e_menos&veaction=edit&section=3" title="Editar secção: Sinal de menos" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Sinais_de_mais_e_menos&action=edit&section=3" title="Editar código-fonte da secção: Sinal de menos"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>O sinal de menos tem três usos principais na matemática<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span>[</span>5<span>]</span></a></sup>: </p> <ol><li>O operador de subtração: Um operador binário para indicar a operação de <a href="/wiki/Subtra%C3%A7%C3%A3o" title="Subtração">subtração</a>, como em 5 − 3 = 2. A subtração é o inverso da adição.</li> <li>Diretamente na frente de um número e quando não é um operador de subtração que significa um número negativo. Por exemplo −5 é de 5 negativo.</li> <li>Um operador unário que atua como uma instrução para substituir o operando pelo seu oposto. Por exemplo, se <i>x</i> é 3, então −<i>x</i> é −3, mas se <i>x</i> é −3, então −<i>x</i> é 3. Da mesma forma, −(−2) é igual a  2.</li></ol> <h2 id="Referências" style="cursor: help;" title="Esta seção foi configurada para não ser editável diretamente. Edite a página toda ou a seção anterior em vez disso."><span id="Refer.C3.AAncias"></span>Referências</h2> <div class="reflist" style="list-style-type: decimal;"><div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><cite class="citation news">STALLINGS, Lynn (Maio de 2000). <a rel="nofollow" class="external text" href="http://findarticles.com/p/articles/mi_qa3667/is_200005/ai_n8885415/">«A brief history of algebraic notation»</a>. <i>School Science and Mathematics</i><span class="reference-accessdate">. Consultado em 13 de Abril de 2009</span></cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fpt.wikipedia.org%3ASinais+de+mais+e+menos&rft.atitle=A+brief+history+of+algebraic+notation&rft.au=STALLINGS%2C+Lynn&rft.date=2000-05&rft.genre=article&rft.jtitle=School+Science+and+Mathematics&rft_id=http%3A%2F%2Ffindarticles.com%2Fp%2Farticles%2Fmi_qa3667%2Fis_200005%2Fai_n8885415%2F&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><cite class="citation book">Karlson, Paul (1961). <i>A Magia dos Números</i>. Porto Alegre: Globo. p. 608</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fpt.wikipedia.org%3ASinais+de+mais+e+menos&rft.aufirst=Paul&rft.aulast=Karlson&rft.btitle=A+Magia+dos+N%C3%BAmeros&rft.date=1961&rft.genre=book&rft.pages=608&rft.place=Porto+Alegre&rft.pub=Globo&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text">Alan Sangster, Greg Stoner & Patricia McCarthy: "The market for Luca Pacioli’s Summa Arithmetica" (Accounting, Business & Financial History Conference, Cardiff, September 2007) p.5</span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://jeff560.tripod.com/operation.html">Primeiros usos de vários símbolos matemáticos</a></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text"><cite class="citation book">PICCIOTTO, Henri. <a rel="nofollow" class="external text" href="http://books.google.com/books?id=nzukMBV6ReoC&pg=PA9"><i>The Algebra Lab</i></a>. [S.l.]: Creative Publications. p. 9. <a href="/wiki/International_Standard_Book_Number" title="International Standard Book Number">ISBN</a> <a href="/wiki/Especial:Fontes_de_livros/9780884889649" title="Especial:Fontes de livros/9780884889649">9780884889649</a></cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fpt.wikipedia.org%3ASinais+de+mais+e+menos&rft.au=PICCIOTTO%2C+Henri&rft.btitle=The+Algebra+Lab&rft.genre=book&rft.isbn=9780884889649&rft.pages=9&rft.pub=Creative+Publications&rft_id=http%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DnzukMBV6ReoC%26pg%3DPA9&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> </ol></div></div> <table class="noprint" style="border-top:none; border-bottom:none; background:transparent; color: inherit"><tbody><tr> <td style="text-align: center;"><span typeof="mw:File"><a href="/wiki/Ficheiro:E-to-the-i-pi.svg" class="mw-file-description"><img alt="Ícone de esboço" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/35/E-to-the-i-pi.svg/34px-E-to-the-i-pi.svg.png" decoding="async" width="34" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/35/E-to-the-i-pi.svg/51px-E-to-the-i-pi.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/35/E-to-the-i-pi.svg/68px-E-to-the-i-pi.svg.png 2x" data-file-width="512" data-file-height="453" /></a></span></td> <td><i>Este artigo sobre <a href="/wiki/Matem%C3%A1tica" title="Matemática">matemática</a> é um <a href="/wiki/Wikip%C3%A9dia:Esbo%C3%A7o" title="Wikipédia:Esboço">esboço</a>. Você pode ajudar a Wikipédia <b><span class="plainlinks"><a class="external text" href="https://pt.wikipedia.org/w/index.php?title=Sinais_de_mais_e_menos&action=edit">expandindo-o</a></span></b>.</i><div class="plainlinks hlist navbar mini" style="position:absolute; right:15px; font-size:smaller; display:none;"><ul><li class="nv-ver"><a href="/wiki/Predefini%C3%A7%C3%A3o:Esbo%C3%A7o-matem%C3%A1tica" title="Predefinição:Esboço-matemática"><abbr title="Ver esta predefinição">v</abbr></a></li><li class="nv-discutir"><a href="/wiki/Predefini%C3%A7%C3%A3o_Discuss%C3%A3o:Esbo%C3%A7o-matem%C3%A1tica" title="Predefinição Discussão:Esboço-matemática"><abbr title="Discutir esta predefinição">d</abbr></a></li><li class="nv-editar"><a class="external text" href="https://pt.wikipedia.org/w/index.php?title=Predefini%C3%A7%C3%A3o:Esbo%C3%A7o-matem%C3%A1tica&action=edit"><abbr title="Editar esta predefinição">e</abbr></a></li></ul></div></td> </tr></tbody></table>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Obtida de "<a dir="ltr" href="https://pt.wikipedia.org/w/index.php?title=Sinais_de_mais_e_menos&oldid=62004163">https://pt.wikipedia.org/w/index.php?title=Sinais_de_mais_e_menos&oldid=62004163</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Especial:Categorias" title="Especial:Categorias">Categorias</a>: <ul><li><a href="/wiki/Categoria:Aritm%C3%A9tica_elementar" title="Categoria:Aritmética elementar">Aritmética elementar</a></li><li><a href="/wiki/Categoria:S%C3%ADmbolos_matem%C3%A1ticos" title="Categoria:Símbolos matemáticos">Símbolos matemáticos</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Categorias ocultas: <ul><li><a href="/wiki/Categoria:P%C3%A1ginas_que_utilizam_a_extens%C3%A3o_WikiHiero" title="Categoria:Páginas que utilizam a extensão WikiHiero">Páginas que utilizam a extensão WikiHiero</a></li><li><a href="/wiki/Categoria:!Artigos_que_carecem_de_notas_de_rodap%C3%A9_desde_setembro_de_2021" title="Categoria:!Artigos que carecem de notas de rodapé desde setembro de 2021">!Artigos que carecem de notas de rodapé desde setembro de 2021</a></li><li><a href="/wiki/Categoria:!Artigos_que_carecem_de_notas_de_rodap%C3%A9_sem_indica%C3%A7%C3%A3o_de_tema" title="Categoria:!Artigos que carecem de notas de rodapé sem indicação de tema">!Artigos que carecem de notas de rodapé sem indicação de tema</a></li><li><a href="/wiki/Categoria:!Esbo%C3%A7os_sobre_matem%C3%A1tica" title="Categoria:!Esboços sobre matemática">!Esboços sobre matemática</a></li><li><a href="/wiki/Categoria:!Esbo%C3%A7os_maiores_que_1000_bytes" title="Categoria:!Esboços maiores que 1000 bytes">!Esboços maiores que 1000 bytes</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Esta página foi editada pela última vez às 00h18min de 8 de setembro de 2021.</li> <li id="footer-info-copyright">Este texto é disponibilizado nos termos da licença <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.pt">Atribuição-CompartilhaIgual 4.0 Internacional (CC BY-SA 4.0) da Creative Commons</a>; pode estar sujeito a condições adicionais. Para mais detalhes, consulte as <a class="external text" href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Terms_of_Use">condições de utilização</a>.</li> </ul> <ul id="footer-places"> <li id="footer-places-privacy"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Privacy_policy/pt-br">Política de privacidade</a></li> <li id="footer-places-about"><a href="/wiki/Wikip%C3%A9dia:Sobre">Sobre a Wikipédia</a></li> <li id="footer-places-disclaimers"><a href="/wiki/Wikip%C3%A9dia:Aviso_geral">Avisos gerais</a></li> <li id="footer-places-wm-codeofconduct"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Universal_Code_of_Conduct">Código de conduta</a></li> <li id="footer-places-developers"><a href="https://developer.wikimedia.org">Programadores</a></li> <li id="footer-places-statslink"><a href="https://stats.wikimedia.org/#/pt.wikipedia.org">Estatísticas</a></li> <li id="footer-places-cookiestatement"><a href="https://foundation.wikimedia.org/wiki/Special:MyLanguage/Policy:Cookie_statement">Declaração sobre ''cookies''</a></li> <li id="footer-places-mobileview"><a href="//pt.m.wikipedia.org/w/index.php?title=Sinais_de_mais_e_menos&mobileaction=toggle_view_mobile" class="noprint stopMobileRedirectToggle">Versão móvel</a></li> </ul> <ul id="footer-icons" class="noprint"> <li id="footer-copyrightico"><a href="https://wikimediafoundation.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/static/images/footer/wikimedia-button.svg" width="84" height="29" alt="Wikimedia Foundation" loading="lazy"></a></li> <li id="footer-poweredbyico"><a href="https://www.mediawiki.org/" class="cdx-button cdx-button--fake-button cdx-button--size-large cdx-button--fake-button--enabled"><img src="/w/resources/assets/poweredby_mediawiki.svg" alt="Powered by MediaWiki" width="88" height="31" loading="lazy"></a></li> </ul> </footer> </div> </div> </div> <div class="vector-settings" id="p-dock-bottom"> <ul></ul> </div><script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-f69cdc8f6-542sp","wgBackendResponseTime":135,"wgPageParseReport":{"limitreport":{"cputime":"0.310","walltime":"0.426","ppvisitednodes":{"value":1659,"limit":1000000},"postexpandincludesize":{"value":88561,"limit":2097152},"templateargumentsize":{"value":26376,"limit":2097152},"expansiondepth":{"value":17,"limit":100},"expensivefunctioncount":{"value":2,"limit":500},"unstrip-depth":{"value":0,"limit":20},"unstrip-size":{"value":13715,"limit":5000000},"entityaccesscount":{"value":0,"limit":400},"timingprofile":["100.00% 375.089 1 -total"," 45.61% 171.067 1 Predefinição:Mais_notas"," 38.13% 143.020 1 Predefinição:Ambox"," 27.54% 103.307 1 Predefinição:Pontuação"," 26.49% 99.343 1 Predefinição:Sidebar"," 22.01% 82.543 1 Predefinição:Referências"," 16.39% 61.489 4 Predefinição:Aligned_table"," 13.62% 51.087 1 Predefinição:Citar_jornal"," 8.83% 33.123 3 Predefinição:Background_color"," 7.41% 27.791 3 Predefinição:Main_other"]},"scribunto":{"limitreport-timeusage":{"value":"0.177","limit":"10.000"},"limitreport-memusage":{"value":2743719,"limit":52428800}},"cachereport":{"origin":"mw-web.eqiad.main-fdc978966-xns7f","timestamp":"20241119122355","ttl":2592000,"transientcontent":false}}});});</script> <script type="application/ld+json">{"@context":"https:\/\/schema.org","@type":"Article","name":"Sinais de mais e menos","url":"https:\/\/pt.wikipedia.org\/wiki\/Sinais_de_mais_e_menos","sameAs":"http:\/\/www.wikidata.org\/entity\/Q747083","mainEntity":"http:\/\/www.wikidata.org\/entity\/Q747083","author":{"@type":"Organization","name":"Contribuidores dos projetos da Wikimedia"},"publisher":{"@type":"Organization","name":"Funda\u00e7\u00e3o Wikimedia, Inc.","logo":{"@type":"ImageObject","url":"https:\/\/www.wikimedia.org\/static\/images\/wmf-hor-googpub.png"}},"datePublished":"2010-09-10T22:05:46Z","dateModified":"2021-09-08T00:18:45Z","headline":"s\u00edmbolos matem\u00e1ticos usados para representar as no\u00e7\u00f5es de positivo bem como as opera\u00e7\u00f5es de adi\u00e7\u00e3o e subtra\u00e7\u00e3o"}</script> </body> </html>