{"id":25602,"date":"2021-12-24T17:28:14","date_gmt":"2021-12-24T10:28:14","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=25602"},"modified":"2021-12-24T17:28:15","modified_gmt":"2021-12-24T10:28:15","slug":"bai-so-32-do-vui-luyen-tri-thong-minh","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/bai-so-32-do-vui-luyen-tri-thong-minh\/","title":{"rendered":"B\u00c0I S\u1ed0 32 &#8211; \u0110\u1ed1 vui luy\u1ec7n tr\u00ed th\u00f4ng minh"},"content":{"rendered":"<h3><a id=\"post-25602-CAU_1_31\"><\/a>C\u00c2U 1:<\/h3>\n<p>T\u1eeb 6 h\u00ecnh v\u1ebd \u0111\u01b0\u1ee3c \u0111\u00e1nh s\u1ed1 ph\u00eda d\u01b0\u1edbi, h\u00e3y ch\u1ecdn m\u1ed9t h\u00ecnh th\u00edch h\u1ee3p \u0111i\u1ec1n v\u00e0o d\u1ea5u ch\u1ea5m h\u1ecfi.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" width=\"567\" height=\"720\" class=\"wp-image-25603\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/65-jpg.jpeg\" alt=\"65.jpg\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/65-jpg.jpeg 567w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/65-jpg-236x300.jpeg 236w\" sizes=\"(max-width: 567px) 100vw, 567px\" \/><\/p>\n<h3><a id=\"post-25602-CAU_2_30\"><\/a>C\u00c2U 2:<\/h3>\n<p>T\u1ed5ng s\u1ed1 vi\u00ean k\u1eb9o 80<\/p>\n<p>B\u1eddm, Bi, Bo \u0111\u00f3 3 ng\u01b0\u1eddi \u0111\u01b0\u1ee3c ph\u00e2n<\/p>\n<p>Bo so bi g\u1ea5p \u0111\u00f4i l\u1ea7n<\/p>\n<p>Th\u00eam 5 vi\u00ean, B\u1eddm l\u00e3nh ph\u1ea7n h\u01a1n Bo<\/p>\n<p>\u0110\u1ed1 <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">h\u1ecdc sinh<\/a>, \u0111\u1ed1 h\u1ecdc tr\u00f2?<\/p>\n<p>S\u1ed1 k\u1eb9o m\u1ed7i b\u1ea1n \u0111\u01b0\u1ee3c cho \u00edt nhi\u1ec1u?<\/p>\n<p>Em y\u00eau, b\u1ea1n m\u1ebfn mau \u0111i\u1ec1u tra xem.<\/p>\n<h3><a id=\"post-25602-CAU_3_31\"><\/a>C\u00c2U 3:<\/h3>\n<p>C\u00f3 30 c\u00e1i chai, 1 ng\u01b0\u1eddi b\u1eafn s\u00fang b\u1eafn h\u01b0 tai c\u00e1c chai h\u1ecfi c\u00f2n l\u1ea1i bao nhi\u00eau chai?<\/p>\n<h3><a id=\"post-25602-CAU_4___Do_meo_1\"><\/a>C\u00c2U 4: (\u0110\u1ed1 m\u1eb9o):<\/h3>\n<p>M\u1ed9t ng\u01b0\u1eddi l\u00ednh \u0111i \u0111\u1eb1ng tr\u01b0\u1edbc ba ng\u01b0\u1eddi l\u00ednh \u0111i \u0111\u1eb1ng sau. H\u1ecfi c\u00f3 m\u1ea5y ng\u01b0\u1eddi l\u00ednh?<\/p>\n<h3><a id=\"post-25602-CAU_5_18\"><\/a>C\u00c2U 5:<\/h3>\n<p>M\u1ed9t \u0111o\u1ea1n \u0111\u01b0\u1eddng n\u1ecd tr\u1ed3ng t\u1ea5t c\u1ea3 20 c\u00e2y v\u1edbi kho\u1ea3ng c\u00e1ch \u0111\u1ec1u nhau. N\u1ebfu nh\u01b0 b\u1ea1n ch\u1ea1y tr\u00ean \u0111o\u1ea1n \u0111\u01b0\u1eddng \u0111\u00f3 v\u1edbi m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n sau:<\/p>\n<p>&#8211; \u0110i\u1ec3m xu\u1ea5t ph\u00e1t l\u00e0 c\u00e2y \u0111\u1ea7u ti\u00ean.<\/p>\n<p>&#8211; Sau 13 gi\u00e2y b\u1ea1n \u0111\u00e3 \u0111\u1ebfn ch\u1ed7 c\u00e2y th\u1ee9 13 r\u1ed3i.<\/p>\n<p>&#8211; V\u1eadn t\u1ed1c c\u1ee7a b\u1ea1n kh\u00f4ng thay \u0111\u1ed5i.<\/p>\n<p>V\u1eady b\u1ea1n c\u1ea7n bao l\u00e2u n\u1eefa \u0111\u1ec3 \u0111\u1ebfn c\u00e2y cu\u1ed1i c\u00f9ng? Gi\u1ea3i th\u00edch xem?<\/p>\n<h3><a id=\"post-25602-CAU_6_5\"><\/a>C\u00c2U 6:<\/h3>\n<p>C\u00f3 bao nhi\u00eau h\u00ecnh tam gi\u00e1c trong h\u00ecnh sau?.<\/p>\n<p><img decoding=\"async\" width=\"568\" height=\"238\" class=\"wp-image-25604\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/67-jpg.jpeg\" alt=\"67.jpg\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/67-jpg.jpeg 568w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/67-jpg-300x126.jpeg 300w\" sizes=\"(max-width: 568px) 100vw, 568px\" \/><\/p>\n<p><img decoding=\"async\" width=\"611\" height=\"186\" class=\"wp-image-25605\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/64-jpg-1.jpeg\" alt=\"64.jpg\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/64-jpg-1.jpeg 611w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/64-jpg-1-300x91.jpeg 300w\" sizes=\"(max-width: 611px) 100vw, 611px\" \/><\/p>\n<h1>H\u01af\u1edaNG D\u1eaaN &#8211; B\u00c0I GI\u1ea2I &#8211; \u0110\u00c1P S\u1ed0<\/h1>\n<h2><a id=\"post-25602-BAI_SO_32_1\"><\/a>B\u00c0I S\u1ed0 32<\/h2>\n<h3><a id=\"post-25602-CAU_1_70\"><\/a>C\u00c2U 1:<\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"572\" height=\"686\" class=\"wp-image-25606\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/163-jpg.jpeg\" alt=\"163.jpg\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/163-jpg.jpeg 572w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/163-jpg-250x300.jpeg 250w\" sizes=\"(max-width: 572px) 100vw, 572px\" \/><\/p>\n<p>\u0110\u00e1p \u00e1n:<\/p>\n<p>Ch\u1ecdn h\u00ecnh 2 v\u00ec theo h\u00e0ng d\u1ecdc, h\u00e0ng ngang \u0111\u1ec1u c\u00f3 3 h\u00ecnh: tr\u1eafng, s\u1ecdc ngang, s\u1ecdc d\u1ecdc; c\u00f3 h\u00ecnh nh\u1ecf ph\u00eda ngo\u00e0i \u1edf v\u1ecb tr\u00ed kh\u00e1c nhau v\u00e0 c\u00f3 tr\u1eafng, \u0111en, s\u1ecdc x\u00e9o).<\/p>\n<h3><a id=\"post-25602-CAU_2_70\"><\/a>C\u00c2U 2:<\/h3>\n<p>S\u1ed1 k\u1eb9o c\u1ee7a Bi <img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"190\" class=\"wp-image-25607\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/164-jpg.jpeg\" alt=\"164.jpg\" \/><br \/>\nS\u1ed1 k\u1eb9o c\u1ee7a Bo<br \/>\nS\u1ed1 k\u1eb9o c\u1ee7a<br \/>\nB\u1eddm<\/p>\n<p>B\u00e0i gi\u1ea3i:<\/p>\n<p>5 l\u1ea7n s\u1ed1 k\u1eb9o bi \u0111\u01b0\u1ee3c ph\u00e2n l\u00e0:<\/p>\n<p>80 \u2013 5 = 75 (vi\u00ean)<\/p>\n<p>S\u1ed1 k\u1eb9o bi \u0111\u01b0\u1ee3c ph\u00e2n l\u00e0:<\/p>\n<p>75 : 5 = 15 (vi\u00ean)<\/p>\n<p>S\u1ed1 k\u1eb9o bo \u0111\u01b0\u1ee3c ph\u00e2n l\u00e0:<\/p>\n<p>15 x 2 = 30 (vi\u00ean )<\/p>\n<p>S\u1ed1 k\u1eb9o b\u1eddm \u0111\u01b0\u1ee3c ph\u00e2n l\u00e0:<\/p>\n<p>30 + 5 = 35 (vi\u00ean)<\/p>\n<p>\u0110\u00e1p s\u1ed1: Bi: 15 vi\u00ean<\/p>\n<p>Bo: 30 vi\u00ean<\/p>\n<p>B\u1eddm: 35 vi\u00ean.<\/p>\n<h3><a id=\"post-25602-CAU_3_71\"><\/a>C\u00c2U 3:<\/h3>\n<p>B\u00e0i gi\u1ea3i:<\/p>\n<p>H\u01b0 tai n\u00f3i l\u00e1i th\u00e0nh 24<\/p>\n<p>S\u1ed1 chai c\u00f2n l\u1ea1i l\u00e0:<\/p>\n<p>30 \u2013 24 = 6 (chai)<\/p>\n<p>\u0110\u00e1p s\u1ed1: 6 chai.<\/p>\n<h3><a id=\"post-25602-CAU_4_65\"><\/a>C\u00c2U 4:<\/h3>\n<p>B\u00e0i gi\u1ea3i hai ng\u01b0\u1eddi l\u00ednh.<\/p>\n<p>V\u00ec ng\u01b0\u1eddi l\u00ednh \u0111i \u0111\u1eb1ng tr\u01b0\u1edbc. Ba (b\u1ed1) ng\u01b0\u1eddi l\u00ednh \u0111i \u0111\u1eb1ng sau. Ng\u01b0\u1eddi l\u00ednh + b\u1ed1 ng\u01b0\u1eddi l\u00ednh = 2 ng\u01b0\u1eddi.<\/p>\n<h3><a id=\"post-25602-CAU_5_45\"><\/a>C\u00c2U 5:<\/h3>\n<p>B\u00e0i gi\u1ea3i:<\/p>\n<p>13 c\u00e2y \u0111\u1ea7u ti\u00ean c\u00f3 13 &#8211; 1 = 12 kho\u1ea3ng c\u00e1ch, t\u1ed1n 13 gi\u00e2y, v\u1eady th\u1eddi gian c\u1ea7n th\u00eam \u0111\u1ec3 ch\u1ea1y \u0111\u1ebfn c\u00e2y 20 l\u00e0:<\/p>\n<p>13 x (20 &#8211; 13) = 91 (gi\u00e2y)<\/p>\n<p>\u0110\u00e1p s\u1ed1: 91 gi\u00e2y.<\/p>\n<h3><a id=\"post-25602-CAU_6_19\"><\/a>C\u00c2U 6:<\/h3>\n<p>C\u00f3 124 h\u00ecnh tam gi\u00e1c<\/p>\n<p>M\u1ed7i tam gi\u00e1c trong h\u00ecnh s\u1ebd c\u00f3 4 l\u1ea7n l\u1eb7p l\u1ea1i.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"567\" height=\"194\" class=\"wp-image-25608\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/165-jpg.jpeg\" alt=\"165.jpg\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/165-jpg.jpeg 567w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/165-jpg-300x103.jpeg 300w\" sizes=\"(max-width: 567px) 100vw, 567px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00c2U 1: T\u1eeb 6 h\u00ecnh v\u1ebd \u0111\u01b0\u1ee3c \u0111\u00e1nh s\u1ed1 ph\u00eda d\u01b0\u1edbi, h\u00e3y ch\u1ecdn m\u1ed9t h\u00ecnh th\u00edch h\u1ee3p \u0111i\u1ec1n v\u00e0o d\u1ea5u ch\u1ea5m h\u1ecfi. C\u00c2U 2: T\u1ed5ng s\u1ed1 vi\u00ean k\u1eb9o 80 B\u1eddm, Bi, Bo \u0111\u00f3 3 ng\u01b0\u1eddi \u0111\u01b0\u1ee3c ph\u00e2n Bo so bi g\u1ea5p \u0111\u00f4i l\u1ea7n Th\u00eam 5 vi\u00ean, B\u1eddm l\u00e3nh ph\u1ea7n h\u01a1n Bo \u0110\u1ed1 h\u1ecdc sinh, \u0111\u1ed1 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[47],"tags":[],"class_list":["post-25602","post","type-post","status-publish","format-standard","hentry","category-do-vui"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25602","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=25602"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25602\/revisions"}],"predecessor-version":[{"id":25609,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25602\/revisions\/25609"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=25602"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=25602"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=25602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}