{"id":162,"date":"2020-06-17T10:02:29","date_gmt":"2020-06-17T08:02:29","guid":{"rendered":"http:\/\/lecahierdemath.fr\/?p=162"},"modified":"2026-01-14T23:31:08","modified_gmt":"2026-01-14T22:31:08","slug":"ca4-la-multiplication","status":"publish","type":"post","link":"http:\/\/lecahierdemath.fr\/index.php\/2020\/06\/17\/ca4-la-multiplication\/","title":{"rendered":"Ca3 La multiplication"},"content":{"rendered":"\n<ul class=\"wp-block-list\"><li>On utilise la<span class=\"has-inline-color has-vivid-green-cyan-color\"> multiplication<\/span> pour&nbsp;compter des carreaux sur un quadrillage, ou des objets rang\u00e9s de la m\u00eame mani\u00e8re (des caisses empil\u00e9es, des bo\u00eetes d&rsquo;\u0153ufs, des planches de timbres\u2026)<\/li><\/ul>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/image.png\" alt=\"\" class=\"wp-image-163\" width=\"295\" height=\"261\"\/><figcaption>Si je veux calculer le nombre de timbres, je vais multiplier le nombre de colonnes (ici 10) par le nombre de lignes (ici 6)<br>6 x 10 = 60 <br>Il y a 60 timbres sur cette planche.<\/figcaption><\/figure><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>On utilise aussi la multiplication pour \u00e9viter <span class=\"has-inline-color has-vivid-green-cyan-color\">une addition r\u00e9p\u00e9t\u00e9e<\/span>.<\/li><\/ul>\n\n\n\n<p><em>Dans une salle, il y a 5 rang\u00e9es de 12 places. Combien y a-t-il de places au total&nbsp;?<\/em><\/p>\n\n\n\n<p><em>Au lieu de faire 12 + 12 + 12 + 12 + 12, on va faire 5 x 12.<\/em><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Le signe de la multiplication est <span class=\"has-inline-color has-vivid-green-cyan-color\">x<\/span><\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>Le r\u00e9sultat de la multiplication est le <span class=\"has-inline-color has-vivid-green-cyan-color\">produit<\/span>.<\/li><\/ul>\n\n\n\n<p><strong><span class=\"has-inline-color has-vivid-green-cyan-color\">U<\/span><\/strong><span class=\"has-inline-color has-vivid-green-cyan-color\"><strong>ne chose est s\u00fbre, il faut apprendre ses tables de multiplication par c\u0153ur !<\/strong><\/span><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><a href=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Ca3-La-multiplication.pdf\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Cahier.jpg\" alt=\"\" class=\"wp-image-22\" width=\"72\" height=\"48\" srcset=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Cahier.jpg 550w, http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Cahier-300x200.jpg 300w\" sizes=\"auto, (max-width: 72px) 100vw, 72px\" \/><\/a><figcaption><a href=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Ca3-La-multiplication.pdf\">la carte mentale<\/a><\/figcaption><\/figure><\/div>\n\n\n\n<div class=\"wp-block-image is-style-default\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Diaporama.jpg\" alt=\"\" class=\"wp-image-23\" width=\"150\" height=\"114\" srcset=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Diaporama.jpg 672w, http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Diaporama-300x226.jpg 300w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><figcaption><a href=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/11\/Ca3-Multiplier-par-un-nombre-a-1-chiffre.pptx\">Diaporama multiplication d&rsquo;un nombre \u00e0 un chiffre<\/a><\/figcaption><\/figure><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Diaporama.jpg\" alt=\"\" class=\"wp-image-23\" width=\"150\" height=\"120\"\/><figcaption><a href=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/11\/Ca3-Multiplier-par-un-nombre-a-plusieurs-chiffres.pptx\">Diaporama multiplication des nombres \u00e0 plusieurs chiffres<\/a><\/figcaption><\/figure><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><a href=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Multiplier-des-nombres-d\u00e9cimaux.pptx\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Diaporama.jpg\" alt=\"\" class=\"wp-image-23\" width=\"150\" height=\"120\"\/><\/a><figcaption><a href=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Multiplier-des-nombres-d\u00e9cimaux.pptx\">Diaporama multiplication des nombres d\u00e9cimaux<\/a><\/figcaption><\/figure><\/div>\n\n\n\n<figure class=\"wp-block-video aligncenter\"><video height=\"720\" style=\"aspect-ratio: 1280 \/ 720;\" width=\"1280\" controls src=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/11\/Ca3-La-multiplication-par-un-nombre-a-1-chiffre.mp4\"><\/video><\/figure>\n\n\n\n<figure class=\"wp-block-video aligncenter\"><video height=\"720\" style=\"aspect-ratio: 800 \/ 720;\" width=\"800\" controls src=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/11\/Ca3-Multiplier-par-un-nombre-a-plusieurs-chiffres.m4v\"><\/video><\/figure>\n\n\n\n<figure class=\"wp-block-video aligncenter\"><video height=\"720\" style=\"aspect-ratio: 1280 \/ 720;\" width=\"1280\" controls src=\"http:\/\/lecahierdemath.fr\/wp-content\/uploads\/2020\/06\/Multiplier-les-nombres-d\u00e9cimaux-1.mp4\"><\/video><figcaption>Multiplication des nombres d\u00e9cimaux.<\/figcaption><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>On utilise la multiplication pour&nbsp;compter des carreaux sur un quadrillage, ou des objets rang\u00e9s de la m\u00eame mani\u00e8re (des caisses empil\u00e9es, des bo\u00eetes d&rsquo;\u0153ufs, des planches de timbres\u2026) On utilise aussi la multiplication pour \u00e9viter une addition r\u00e9p\u00e9t\u00e9e. Dans une salle, il y a 5 rang\u00e9es de 12 places. Combien y a-t-il de places au total&nbsp;? Au lieu de faire 12 + 12 + 12 + 12 + 12, on va faire 5 x 12. Le signe de la multiplication&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"http:\/\/lecahierdemath.fr\/index.php\/2020\/06\/17\/ca4-la-multiplication\/\">Lire la suite<span class=\"screen-reader-text\"> Lire la suite<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-162","post","type-post","status-publish","format-standard","hentry","category-calcul"],"_links":{"self":[{"href":"http:\/\/lecahierdemath.fr\/index.php\/wp-json\/wp\/v2\/posts\/162","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/lecahierdemath.fr\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/lecahierdemath.fr\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/lecahierdemath.fr\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/lecahierdemath.fr\/index.php\/wp-json\/wp\/v2\/comments?post=162"}],"version-history":[{"count":7,"href":"http:\/\/lecahierdemath.fr\/index.php\/wp-json\/wp\/v2\/posts\/162\/revisions"}],"predecessor-version":[{"id":443,"href":"http:\/\/lecahierdemath.fr\/index.php\/wp-json\/wp\/v2\/posts\/162\/revisions\/443"}],"wp:attachment":[{"href":"http:\/\/lecahierdemath.fr\/index.php\/wp-json\/wp\/v2\/media?parent=162"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/lecahierdemath.fr\/index.php\/wp-json\/wp\/v2\/categories?post=162"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/lecahierdemath.fr\/index.php\/wp-json\/wp\/v2\/tags?post=162"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}