{"id":25610,"date":"2021-12-24T17:29:19","date_gmt":"2021-12-24T10:29:19","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=25610"},"modified":"2021-12-24T17:29:19","modified_gmt":"2021-12-24T10:29:19","slug":"bai-so-33-do-vui-luyen-tri-thong-minh","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/bai-so-33-do-vui-luyen-tri-thong-minh\/","title":{"rendered":"B\u00c0I S\u1ed0 33 – \u0110\u1ed1 vui luy\u1ec7n tr\u00ed th\u00f4ng minh"},"content":{"rendered":"

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

S\u1ed1 ti\u1ebfp theo trong d\u00e3y s\u1ed1 sau \u0111\u00e2y l\u00e0 s\u1ed1 n\u00e0o? b\u1ea1n h\u00e3y khoanh tr\u00f2n v\u00e0o \u0111\u00e1p \u00e1n \u0111\u00fang nh\u00e9!<\/p>\n

3\u2026 5\u2026 10\u2026 12\u2026 24\u2026 26\u2026?<\/p>\n

A. 29 | B. 31 | C. 28 | D. 52<\/p>\n

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

Ho\u00e0ng ng\u1ed3i \u0111\u0103m chi\u00eau tr\u01b0\u1edbc m\u1ed9t b\u00e0n c\u1edd, Tu\u1ea5n \u0111\u1ebfn b\u00ean nhanh nh\u1ea3u:<\/p>\n

– C\u1eadu \u0111ang nghi\u00ean c\u1ee9u g\u00ec \u1edf b\u00e0n c\u1edd m\u00e0 say s\u01b0a th\u1ebf?<\/p>\n

Ho\u00e0ng quay sang Tu\u1ea5n:<\/p>\n

– Anh Nam v\u1eeba \u0111\u1ed1 t\u1edb chia b\u00e0n c\u1edd th\u00e0nh 7 h\u00ecnh ch\u1eef nh\u1eadt kh\u00e1c nhau m\u00e0 s\u1ed1 \u00f4 \u0111en v\u00e0 s\u1ed1 \u00f4 tr\u1eafng \u1edf m\u1ed7i h\u00ecnh b\u1eb1ng nhau. T\u1edb v\u1edbi c\u1eadu c\u00f9ng ngh\u0129 xem nh\u00e9!<\/p>\n

Hai b\u1ea1n ch\u1ee5m \u0111\u1ea7u k\u1ebb r\u1ed3i l\u1ea1i x\u00f3a m\u00e3i kh\u00f4ng chia \u0111\u01b0\u1ee3c. C\u00e1c b\u1ea1n c\u00f3 th\u1ec3 gi\u00fap hai b\u1ea1n \u1ea5y kh\u00f4ng?<\/p>\n

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

C\u00f3 m\u1ed9t nh\u00e0 n\u1ecd c\u00f3 5 con ng\u1ed7ng \u1edf trong chu\u1ed3ng, kh\u00e1ch \u0111\u1ebfn b\u00e0 l\u00e0m th\u1ecbt 2 con ngan. \u0110\u1ed1 b\u1ea1n trong chu\u1ed3ng c\u00f2n bao nhi\u00eau con ng\u1ed7ng?<\/p>\n

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

C\u00f4 gi\u00e1o m\u1edbi ra tr\u01b0\u1eddng gi\u1edbi thi\u1ec7u t\u00ean v\u1edbi h\u1ecdc sinh<\/a>, c\u00f4 b\u1ea3o t\u00ean c\u00f4 l\u00e0 t\u00ean 12 b\u1eafp ng\u00f4, v\u1eady th\u00ec t\u00ean c\u00f4 l\u00e0 g\u00ec nh\u1ec9?<\/p>\n

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

C\u00f3 6 c\u00e1i c\u00e2y m\u00e0 c\u00f3 t\u1edbi 12 c\u00e1i v\u00f5ng, l\u00e0m sao \u0111\u1ec3 m\u1eafc \u0111\u01b0\u1ee3c \u0111\u1ee7 s\u1ed1 v\u00f5ng \u0111\u00f3.<\/p>\n

L\u01b0u \u00fd l\u00e0 c\u00e1c v\u00f5ng kh\u00f4ng m\u1eafc ch\u1ed3ng ch\u00e9o nhau. B\u1ea1n c\u0169ng \u0111\u1eebng ngh\u0129 \u0111\u1ebfn vi\u1ec7c b\u1ebb c\u00e2y ra nh\u00e9!<\/p>\n

<\/a>C\u00c2U 6:<\/h3>\n

Nh\u00e0 Nam c\u00f3 4 anh ch\u1ecb em, xu\u00e2n, h\u1ea1, thu v\u1eady ng\u01b0\u1eddi em cu\u1ed1i c\u00f9ng t\u00ean g\u00ec?<\/p>\n

<\/a>C\u00c2U 7:<\/h3>\n

C\u00fac v\u00e0ng c\u00f3 44 b\u00f4ng<\/p>\n

\u0110\u00e2y th\u00eam 56 b\u00f4ng h\u1ed3ng th\u1eafm t\u01b0\u01a1i<\/p>\n

Ph\u00e2n ra s\u1ed1 b\u00f3 \u0111\u1ee7 10<\/p>\n

B\u00f3 t\u1eb7ng 1 ng\u01b0\u1eddi \u0111\u1ebfm \u0111\u01b0\u1ee3c m\u1ea5y b\u00f4ng?<\/p>\n

\u0110\u1ed1 em th\u01a1, \u0111\u1ed1 nhi \u0111\u1ed3ng<\/p>\n

\u0110\u1ed1 ai, ai c\u00f3 bi\u1ebft kh\u00f4ng, \u0111\u00e1p li\u1ec1n.<\/p>\n

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

<\/a>B\u00c0I S\u1ed0 33<\/h2>\n

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

\u0110\u00f3 l\u00e0 ph\u01b0\u01a1ng \u00e1n D.52 v\u00ec:<\/p>\n

3+ 2 = 5<\/p>\n

5 x 2 = 10<\/p>\n

10 + 2 = 12<\/p>\n

12 x 2 = 24<\/p>\n

24 + 2 = 26<\/p>\n

26 x 2 = 52<\/p>\n

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

V\u00ec m\u1ed7i h\u00ecnh ch\u1eef nh\u1eadt \u0111\u1ec1u c\u00f3 s\u1ed1 \u00f4 \u0111en b\u1eb1ng s\u1ed1 \u00f4 tr\u1eafng n\u00ean t\u1ed5ng s\u1ed1 \u00f4 \u1edf m\u1ed7i h\u00ecnh ch\u1eef nh\u1eadt \u0111\u1ec1u l\u00e0 s\u1ed1 ch\u1eb5n. B\u00e0n c\u1edd c\u00f3 64 \u00f4, n\u00ean ta ph\u1ea3i t\u00e1ch 64 th\u00e0nh t\u1ed5ng c\u1ee7a 7 s\u1ed1 ch\u1eb5n kh\u00e1c nhau m\u00e0 m\u1ed7i s\u1ed1 c\u00f3 th\u1ec3 vi\u1ebft th\u00e0nh t\u00edch hai th\u1eeba s\u1ed1 kh\u00f4ng v\u01b0\u1ee3t qu\u00e1 8 (v\u00ec c\u1ea1nh c\u1ee7a b\u00e0n c\u1edd ch\u1ec9 g\u1ed3m c\u00f3 8 \u00f4 vu\u00f4ng):<\/p>\n

64 = 2 + 4 + 6 + 8 + 10 + 14 + 20 = 2 + 4 + 6 + 8 + 10 + 16 + 18 = 2 + 4 + 6 + 8 + 12 + 14 + 18 = 2 + 4 + 6 + 10 + 12 + 14 + 16 = …<\/p>\n

V\u1eady c\u00f3 nhi\u1ec1u c\u00e1ch chia, c\u00e1c b\u1ea1n h\u00e3y tham kh\u1ea3o 2 c\u00e1ch chia sau:<\/p>\n

\"166.jpg\"<\/p>\n

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

V\u00ec nh\u00e0 \u0111\u00f3 th\u1ecbt ngan ch\u1ee9 kh\u00f4ng th\u1ecbt ng\u1ed7ng, n\u00ean trong chu\u1ed3ng v\u1eabn c\u00f2n nguy\u00ean 5 con.<\/p>\n

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

C\u00f4 \u1ea5y t\u00ean l\u00e0 T\u1ed1 Nga v\u00ec T\u1ed1 Nga n\u00f3i l\u00e1i th\u00e0nh T\u00e1 (12) Ng\u00f4. C\u00f4 n\u00f3i t\u00ean c\u00f4 t\u00ean l\u00e0 12 b\u1eafp ng\u00f4, t\u1ee9c l\u00e0 t\u00ean T\u1ed1 Nga \u0111\u1ea5y c\u00e1c b\u1ea1n \u1ea1!<\/p>\n

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

Sau \u0111\u00e2y xin gi\u1edbi thi\u1ec7u m\u1ed9t c\u00e1ch m\u1eafc v\u00f5ng:<\/p>\n

\"167.jpg\"<\/p>\n

H\u00ecnh tr\u00f2n l\u00e0 k\u00ed hi\u1ec7u c\u1ee7a c\u00e2y<\/p>\n

\u0110\u01b0\u1eddng th\u1eb3ng l\u00e0 v\u00f5ng \u0111\u01b0\u1ee3c m\u1eafc.<\/p>\n

<\/a>C\u00c2U 6:<\/h3>\n

Nh\u00e0 Nam c\u00f3 4 ch\u1ecb em. C\u00e1c ch\u1ecb tr\u00ean t\u00ean l\u00e0 Xu\u00e2n, H\u1ea1, Thu. V\u1eady Nam l\u00e0 em \u00fat. Ng\u01b0\u1eddi em \u1ea5y t\u00ean l\u00e0 Nam.<\/p>\n

<\/a>C\u00c2U 7:<\/h3>\n

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

T\u1ed5ng s\u1ed1 b\u00f4ng c\u00fac v\u00e0 b\u00f4ng h\u1ed3ng:<\/p>\n

44 + 56 = 100 (b\u00f4ng)<\/p>\n

S\u1ed1 b\u00f4ng m\u1ed7i b\u00f3 c\u00f3 l\u00e0:<\/p>\n

100 : 10 = 10 (b\u00f4ng)<\/p>\n

\u0110\u00e1p s\u1ed1: 10 (b\u00f4ng).<\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00c2U 1: S\u1ed1 ti\u1ebfp theo trong d\u00e3y s\u1ed1 sau \u0111\u00e2y l\u00e0 s\u1ed1 n\u00e0o? b\u1ea1n h\u00e3y khoanh tr\u00f2n v\u00e0o \u0111\u00e1p \u00e1n \u0111\u00fang nh\u00e9! 3\u2026 5\u2026 10\u2026 12\u2026 24\u2026 26\u2026? A. 29 | B. 31 | C. 28 | D. 52 C\u00c2U 2: Ho\u00e0ng ng\u1ed3i \u0111\u0103m chi\u00eau tr\u01b0\u1edbc m\u1ed9t b\u00e0n c\u1edd, Tu\u1ea5n \u0111\u1ebfn b\u00ean nhanh nh\u1ea3u: – […]<\/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-25610","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\/25610","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=25610"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25610\/revisions"}],"predecessor-version":[{"id":25613,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/25610\/revisions\/25613"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=25610"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=25610"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=25610"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}