{"id":25595,"date":"2021-12-24T17:27:07","date_gmt":"2021-12-24T10:27:07","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=25595"},"modified":"2021-12-24T17:27:09","modified_gmt":"2021-12-24T10:27:09","slug":"bai-so-31-do-vui-luyen-tri-thong-minh","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/bai-so-31-do-vui-luyen-tri-thong-minh\/","title":{"rendered":"B\u00c0I S\u1ed0 31 – \u0110\u1ed1 vui luy\u1ec7n tr\u00ed th\u00f4ng minh"},"content":{"rendered":"

<\/a>C\u00c2U 1:<\/h3>\n

T\u1eeb 6 h\u00ecnh \u0111\u00e1nh s\u1ed1 d\u01b0\u1edbi, h\u00e3y ch\u1ecdn 1 h\u00ecnh th\u00edch h\u1ee3p \u0111i\u1ec1n v\u00e0o ch\u1ed7 tr\u1ed1ng tr\u00ean.<\/p>\n

\"62.jpg\"<\/p>\n

<\/a>C\u00c2U 2:<\/h3>\n

V\u1eeba cam, v\u1eeba qu\u00fdt<\/p>\n

\u0110\u1ebfm \u0111\u1ee7 m\u1ed9t tr\u0103m<\/p>\n

N\u1ebfu \u0111em s\u1ed1 qu\u00fdt chia 5 b\u1ea1n hi\u1ec1n<\/p>\n

M\u1ed7i b\u1ea1n \u0111\u01b0\u1ee3c ch\u1ee5c qu\u1ea3 nguy\u00ean<\/p>\n

S\u1ed1 cam ai bi\u1ebft t\u00ednh li\u1ec1n ra xem?<\/p>\n

\u0110\u1ed1 ai, \u0111\u1ed1 b\u1ea1n, \u0111\u1ed1 em<\/p>\n

Ai nhanh \u0111\u00e1p tr\u00fang th\u01b0\u1edfng k\u00e8m ph\u00e1o tay.<\/p>\n

<\/a>C\u00c2U 3:<\/h3>\n

C\u00f3 ng\u01b0\u1eddi h\u1ecfi m\u1ed9t ng\u01b0\u1eddi \u0111\u00e0n b\u00e0 l\u00e0 b\u00e0 \u0111\u00e3 c\u00f3 bao nhi\u00eau con trai v\u00e0 con g\u00e1i v\u1eady, b\u00e0 ta \u0111\u00e1p:<\/p>\n

M\u1ed7i \u0111\u1ee9a con g\u00e1i c\u1ee7a t\u00f4i c\u00f3 s\u1ed1 ch\u1ecb em g\u00e1i b\u1eb1ng v\u1edbi s\u1ed1 anh em trai. V\u00e0 m\u1ed7i \u0111\u1ee9a con trai c\u1ee7a t\u00f4i c\u00f3 s\u1ed1 ch\u1ecb em g\u00e1i g\u1ea5p \u0111\u00f4i s\u1ed1 anh em trai.<\/p>\n

H\u1ecfi b\u00e0 ta c\u00f3 bao nhi\u00eau con trai v\u00e0 bao nhi\u00eau con g\u00e1i?<\/p>\n

<\/a>C\u00c2U 4:<\/h3>\n

H\u00e3y \u0111i\u1ec1n m\u1ed9t s\u1ed1 c\u00f2n thi\u1ebfu v\u00e0 gi\u1ea3i th\u00edch:<\/p>\n

0 | 2 | 3 | 5 | ? | 8 | 9<\/p>\n

<\/a>C\u00c2U 5:<\/h3>\n

H\u00e3y ch\u1ec9 ra 2 c\u00e1ch c\u1eaft h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y th\u00e0nh 3 mi\u1ebfng \u0111\u1ec3 c\u00f3 th\u1ec3 gh\u00e9p l\u1ea1i th\u00e0nh m\u1ed9t h\u00ecnh vu\u00f4ng… (kh\u00f4ng b\u1ecf \u0111i \u00f4 n\u00e0o).<\/p>\n

\"64.jpg\"<\/p>\n

H\u01af\u1edaNG D\u1eaaN – B\u00c0I GI\u1ea2I – \u0110\u00c1P S\u1ed0<\/h1>\n

<\/a>B\u00c0I S\u1ed0 31<\/h2>\n

<\/a>C\u00c2U 1:<\/h3>\n

\"161.jpg\"<\/p>\n

\u0110\u00e1p s\u1ed1: \u0110\u00f3 l\u00e0 h\u00ecnh th\u1ee9 2 v\u00ec h\u00ecnh th\u1ee9 3 \u1edf m\u1ed7i h\u00e0ng ngang \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh b\u1edfi hai h\u00ecnh kia.<\/p>\n

<\/a>C\u00c2U 2:<\/h3>\n

B\u00e0i gi\u1ea3i:<\/p>\n

S\u1ed1 qu\u00fdt c\u00f3 l\u00e0: 10 x 5 = 50 qu\u1ea3<\/p>\n

S\u1ed1 cam c\u00f3 l\u00e0<\/p>\n

100 \u2013 50 = 50 (qu\u1ea3)<\/p>\n

\u0110\u00e1p s\u1ed1: 50 (qu\u1ea3 cam).<\/p>\n

<\/a>C\u00c2U 3:<\/h3>\n

\u0110\u00e1p s\u1ed1:<\/p>\n

S\u1ed1 ng\u01b0\u1eddi con trai l\u00e0 3, con g\u00e1i l\u00e0 4.<\/p>\n

<\/a>C\u00c2U 4:<\/h3>\n

B\u00e0i gi\u1ea3i:<\/p>\n

S\u1ed1 \u0111i\u1ec1n v\u00e0o d\u1ea5u ch\u1ea5m h\u1ecfi l\u00e0 s\u1ed1 6<\/p>\n

0 + 2 = 2 2 + 1 = 3 3 + 2 = 5 5 + 1 = 6 6 + 2= 8 8 + 1 = 9<\/p>\n

<\/a>C\u00c2U 5:<\/h3>\n

C\u00f3 36 \u00f4 vu\u00f4ng nh\u1ecf => ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 gh\u00e9p \u0111\u01b0\u1ee3c h\u00ecnh vu\u00f4ng 6 x 6.<\/p>\n

C\u00e1ch c\u1eaft 1: (c\u1eaft theo \u0111\u01b0\u1eddng k\u1ebb \u0111\u1eadm)<\/p>\n

\"162_1.jpg\"<\/p>\n

C\u00e1ch c\u1eaft 2: (c\u1eaft theo \u0111\u01b0\u1eddng k\u1ebb \u0111\u1eadm)<\/p>\n

\"162_2.jpg\"<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00c2U 1: T\u1eeb 6 h\u00ecnh \u0111\u00e1nh s\u1ed1 d\u01b0\u1edbi, h\u00e3y ch\u1ecdn 1 h\u00ecnh th\u00edch h\u1ee3p \u0111i\u1ec1n v\u00e0o ch\u1ed7 tr\u1ed1ng tr\u00ean. C\u00c2U 2: V\u1eeba cam, v\u1eeba qu\u00fdt \u0110\u1ebfm \u0111\u1ee7 m\u1ed9t tr\u0103m N\u1ebfu \u0111em s\u1ed1 qu\u00fdt chia 5 b\u1ea1n hi\u1ec1n M\u1ed7i b\u1ea1n \u0111\u01b0\u1ee3c ch\u1ee5c qu\u1ea3 nguy\u00ean S\u1ed1 cam ai bi\u1ebft t\u00ednh li\u1ec1n ra xem? \u0110\u1ed1 ai, \u0111\u1ed1 b\u1ea1n, […]<\/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-25595","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\/25595","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=25595"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25595\/revisions"}],"predecessor-version":[{"id":25601,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25595\/revisions\/25601"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=25595"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=25595"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=25595"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}