{"id":18357,"date":"2024-05-08T13:45:14","date_gmt":"2024-05-08T13:45:14","guid":{"rendered":"https:\/\/soicau3054.minhngocxoso.com\/?p=18357"},"modified":"2024-05-08T13:45:14","modified_gmt":"2024-05-08T13:45:14","slug":"tao-dan-de-chia-het-cho-3-khong-chia-het-cho-3","status":"publish","type":"post","link":"https:\/\/thantaisoicauxoso.com\/tao-dan-de-chia-het-cho-3-khong-chia-het-cho-3\/","title":{"rendered":"T\u1ea1o d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3, kh\u00f4ng chia h\u1ebft cho 3"},"content":{"rendered":"
N\u1ed9i dung b\u00e0i vi\u1ebft<\/p>\n
D\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3 v\u00e0 d\u00e0n \u0111\u1ec1 kh\u00f4ng chia h\u1ebft cho 3 l\u00e0 m\u1ed9t trong nh\u1eefng lo\u1ea1i d\u00e0n \u0111\u1ec1 m\u1edbi, tuy nhi\u00ean l\u1ea1i c\u00f3 \u0111\u01b0\u1ee3c s\u1ef1 quan t\u00e2m v\u00e0 \u00e1p d\u1ee5ng c\u1ee7a r\u1ea5t nhi\u1ec1u anh em trong th\u1eddi gian g\u1ea7n \u0111\u00e2y. D\u00e0n \u0111\u1ec1 d\u1ea1ng chia h\u1ebft hay chia d\u01b0 cho 3 \u0111\u01b0\u1ee3c c\u00e1c cao th\u1ee7 l\u00f4 \u0111\u1ec1 t\u1ed5ng h\u1ee3p v\u00e0 s\u1eed d\u1ee5ng khi ch\u01a1i c\u00f3 t\u1ef7 l\u1ec7 th\u00e0nh c\u00f4ng kh\u00e1 cao.<\/p>\n
Do \u0111\u00e2y l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ch\u01a1i c\u00f2n kh\u00e1 l\u00e0 m\u1edbi, n\u00ean c\u00f3 l\u1ebd r\u1ea5t nhi\u1ec1u anh em v\u1eabn ch\u01b0a bi\u1ebft \u0111\u1ebfn v\u00e0 c\u1ea3m th\u1ea5y h\u01a1i l\u1ea1 l\u1eabm, ch\u01b0a th\u1ec3 \u00e1p d\u1ee5ng ch\u01a1i m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 \u0111\u01b0\u1ee3c. Ch\u00ednh v\u00ec th\u1ebf, trong b\u00e0i vi\u1ebft h\u00f4m nay Tin t\u1ee9c l\u00f4 \u0111\u1ec1 xin chia s\u1ebb t\u1edbi anh em m\u1ed9t s\u1ed1 th\u00f4ng tin quan tr\u1ecdng \u0111\u01b0\u1ee3c t\u1ed5ng h\u1ee3p v\u00e0 t\u00edch l\u0169y v\u1ec1 c\u00e1ch t\u1ea1o d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3 v\u00e0 d\u00e0n \u0111\u1ec1 chia cho 3 d\u01b0 2, d\u01b0 1 ch\u00ednh x\u00e1c nh\u1ea5t nh\u00e9!<\/p>\n
Hi\u1ec3u \u0111\u01a1n gi\u1ea3n th\u00ec d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3 l\u00e0 t\u1eadp h\u1ee3p nh\u1eefng s\u1ed1 trong trong kho\u1ea3ng t\u1eeb 0 \u0111\u1ebfn 99 v\u00e0 l\u00e0 nh\u1eefng s\u1ed1 chia h\u1ebft cho 3.<\/p>\n
C\u00f3 ngh\u0129a l\u00e0, n\u1ebfu anh em th\u1ef1c hi\u1ec7n ph\u00e9p chia c\u1ee7a m\u1ed9t s\u1ed1 b\u1ea5t k\u00ec trong d\u00e0n n\u00e0y cho 3 th\u00ec s\u1ed1 d\u01b0 c\u1ee7a ph\u00e9p t\u00ednh \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n s\u1ebd l\u00e0 0.<\/p>\n
V\u00ed d\u1ee5:<\/p>\n
– S\u1ed1 96 chia cho 3 \u0111\u01b0\u1ee3c 32 v\u00e0 d\u01b0 0, t\u1ee9c l\u00e0 96 chia h\u1ebft cho 3 n\u00ean n\u00f3 thu\u1ed9c d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3.<\/p>\n
– T\u01b0\u01a1ng t\u1ef1 30 chia 3 \u0111\u01b0\u1ee3c 10 v\u00e0 kh\u00f4ng d\u01b0 n\u00ean n\u00f3 c\u0169ng thu\u1ed9c d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3.<\/p>\n
Nh\u01b0 v\u1eady l\u00e0m sao \u0111\u1ec3 t\u00ecm \u0111\u01b0\u1ee3c c\u00e1c s\u1ed1 thu\u1ed9c d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3? R\u1ea5t \u0111\u01a1n gi\u1ea3n, ng\u01b0\u1eddi ch\u01a1i s\u1ebd d\u1ef1a v\u00e0o d\u1ea5u hi\u1ec7u trong to\u00e1n h\u1ecdc \u0111\u1ec3 t\u00ecm ra nh\u1eefng s\u1ed1 chia h\u1ebft cho 3. C\u00e1ch t\u00ednh n\u00e0y t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e1ch t\u00ecm d\u00e0n \u0111\u1ec1 t\u1ed5ng chia h\u1ebft cho 3, t\u1ee9c l\u00e0 \u0111\u1ec1 chia h\u1ebft cho 3 th\u00ec t\u1ed5ng \u0111\u1ec1 c\u1ee7a n\u00f3 l\u00e0 m\u1ed9t s\u1ed1 chia h\u1ebft cho 3.<\/p>\n
V\u00ed d\u1ee5:<\/p>\n
– S\u1ed1 96 c\u00f3 9 + 6 = 15 chia h\u1ebft cho 3 n\u00ean n\u00f3 thu\u1ed9c d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3.<\/p>\n
– S\u1ed1 30 c\u00f3 3 + 0 = 3 chia h\u1ebft cho 3 n\u00ean n\u00f3 c\u0169ng thu\u1ed9c d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3.<\/p>\n
T\u1eeb \u0111\u00f3 ta t\u1ea1o d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3 hay d\u00e0n \u0111\u1ec1 t\u1ed5ng chia h\u1ebft cho 3 g\u1ed3m c\u00e1c s\u1ed1: 00, 03, 06, 09,12,15,18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 63, 66, 69, 72, 75, 78, 81, 84, 87, 90, 93, 96, 99<\/p>\n
<\/p>\n
Anh em c\u00f3 th\u1ec3 hi\u1ec3u r\u1eb1ng d\u00e0n \u0111\u1ec1 kh\u00f4ng chia h\u1ebft cho 3 g\u1ed3m nh\u1eefng s\u1ed1 c\u00f2n l\u1ea1i kh\u00f4ng thu\u1ed9c d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3, nh\u01b0 v\u1eady ta s\u1ebd c\u00f3 d\u00e0n \u0111\u1ec1 67 s\u1ed1 kh\u00f4ng chia h\u1ebft cho 3.<\/p>\n
D\u00e0n \u0111\u1ec1 kh\u00f4ng chia h\u1ebft cho 3 hay d\u00e0n \u0111\u1ec1 t\u1ed5ng kh\u00f4ng chia h\u1ebft cho 3 s\u1ebd c\u00f3 2 lo\u1ea1i nh\u1ecf \u0111\u00f3 l\u00e0 d\u00e0n \u0111\u1ec1 chia cho 3 d\u01b0 2 v\u00e0 d\u00e0n \u0111\u1ec1 chia cho 3 d\u01b0 1.<\/p>\n
Gi\u1ed1ng nh\u01b0 c\u00e1ch t\u1ea1o d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3, ng\u01b0\u1eddi ch\u01a1i c\u0169ng s\u1eed d\u1ee5ng d\u1ea5u hi\u1ec7u trong to\u00e1n h\u1ecdc \u0111\u1ec3 t\u1ea1o d\u00e0n \u0111\u1ec1 chia cho 3 d\u01b0 2. C\u1ee5 th\u1ec3: N\u1ebfu t\u1ed5ng \u0111\u1ec1 chia cho 3 d\u01b0 2 th\u00ec s\u1ed1 \u0111\u00f3 chia cho 3 d\u01b0 2.<\/p>\n
V\u00ed d\u1ee5:<\/p>\n
– S\u1ed1 65 c\u00f3 6 + 5 = 11 chia cho 3 \u0111\u01b0\u1ee3c 3 d\u01b0 2 n\u00ean 65 thu\u1ed9c d\u00e0n \u0111\u1ec1 chia cho 3 d\u01b0 2.<\/p>\n
– S\u1ed1 59 c\u00f3 5 + 9 = 14 chia cho 3 \u0111\u01b0\u1ee3c 4 d\u01b0 2 n\u00ean 59 thu\u1ed9c d\u00e0n \u0111\u1ec1 chia cho 3 d\u01b0 2.<\/p>\n
Nh\u01b0 v\u1eady, ta t\u1ea1o \u0111\u01b0\u1ee3c d\u00e0n \u0111\u1ec1 t\u1ed5ng kh\u00f4ng chia h\u1ebft cho 3 ( chia cho 3 d\u01b0 2) g\u1ed3m c\u00e1c s\u1ed1: 02, 05, 08, 11, 14, 17, 20, 23, 26, 29, 32, 35, 38, 41, 44, 47, 50, 53, 56, 59, 62, 65, 68, 71, 74, 77, 80, 83, 86, 89, 92, 95, 98.<\/p>\n
D\u00e0n \u0111\u1ec1 chia cho 3 d\u01b0 1 c\u0169ng gi\u1ed1ng v\u1edbi d\u00e0n \u0111\u1ec1 chia cho 3 d\u01b0 2, d\u1ef1a v\u00e0o d\u1ea5u hi\u1ec7u \u0111\u1ec3 t\u00ecm ra \u0111\u01b0\u1ee3c c\u00e1c con s\u1ed1 thu\u1ed9c d\u00e0n \u0111\u1ec1.<\/p>\n
Ta c\u00f3 d\u00e0n \u0111\u1ec1 t\u1ed5ng kh\u00f4ng chia h\u1ebft cho 3 (chia 3 d\u01b0 1) g\u1ed3m: 02, 05, 08, 11, 14, 17, 20, 23, 26, 29, 32, 35, 38, 41, 44, 47, 50, 53, 56, 59, 62, 65, 68, 71, 74, 77, 80, 83, 86, 89, 92, 95, 98.<\/p>\n
– \u0110\u1ea7u ti\u00ean l\u00e0 vi\u1ec7c anh em c\u1ea7n l\u1ef1a ch\u1ecdn ra m\u1ed9 nh\u00e0 c\u00e1i uy t\u00edn \u0111\u1ec3 \u0111\u1eb7t c\u01b0\u1ee3c. T\u1ea1i \u0111\u00f3, anh em s\u1ebd \u0111\u01b0\u1ee3c h\u01b0\u1edfng to\u00e0n b\u1ed9 \u01b0u \u0111\u00e3i v\u00e0 l\u1ee3i nhu\u1eadn khi th\u1eafng, v\u00e0 b\u00ean c\u1ea1nh \u0111\u00f3 s\u1ebd \u0111\u1ea3m b\u1ea3o an to\u00e0n tr\u01b0\u1edbc lu\u1eadt ph\u00e1p v\u1ec1 m\u1ee9c \u0111\u1ed9 an to\u00e0n khi tham gia.<\/p>\n
– Khi s\u1eed d\u1ee5ng d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3 th\u00ec anh em c\u1ea7n c\u00f3 m\u1ed9t s\u1ed1 l\u01b0u \u00fd nh\u1ea5t \u0111\u1ecbnh khi ch\u01a1i, v\u00e0 c\u00f9ng chia s\u1ebb kinh nghi\u1ec7m t\u1edbi m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec3 c\u00f9ng nhau v\u00e0o b\u1edd. Do ph\u01b0\u01a1ng ph\u00e1p n\u00e0y l\u00e0 c\u00e1ch ch\u01a1i c\u0169ng c\u00f3 nhi\u1ec1u \u0111\u01a1n gi\u1ea3n, tuy nhi\u00ean kh\u00f4ng ph\u1ea3i v\u00ec v\u1eady m\u00e0 anh em ch\u1ee7 quan l\u00e0m m\u1ea5t \u0111i c\u01a1 h\u1ed9i c\u1ee7a m\u00ecnh.<\/p>\n
– Anh em c\u1ea7n ph\u1ea3i c\u00f3 v\u1ed1n, c\u0169ng nh\u01b0 bi\u1ebft c\u00e1ch qu\u1ea3n l\u00fd v\u1ed1n c\u1ee7a m\u00ecnh m\u1ed9t c\u00e1ch h\u1ee3p l\u00fd v\u00e0 ch\u00ednh x\u00e1c nh\u1ea5t, th\u00ec c\u01a1 h\u1ed9i tr\u00fang gi\u1ea3i khi s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3 s\u1ebd cao h\u01a1n v\u00e0 b\u00ean c\u1ea1nh \u0111\u00f3 anh em s\u1ebd tr\u1ee5 \u0111\u01b0\u1ee3c l\u00e2u h\u01a1n khi nu\u00f4i con s\u1ed1 m\u00ecnh cho l\u00e0 s\u1ebd v\u1ec1.<\/p>\n
Tr\u00ean \u0111\u00e2y l\u00e0 to\u00e0n b\u1ed9 nh\u1eefng kinh nghi\u1ec7m \u0111\u01b0\u1ee3c ch\u00fang t\u00f4i chia s\u1ebb t\u1edbi anh em v\u1ec1 hi\u1ec3u bi\u1ebft v\u1ec1 d\u00e0n \u0111\u1ec1 chia h\u1ebft cho 3, d\u00e0n \u0111\u1ec1 chia cho 3 d\u01b0 2, d\u01b0 1. Hy v\u1ecdng nh\u1eefng ki\u1ebfn th\u1ee9c ph\u00eda tr\u00ean c\u00f3 th\u1ec3 gi\u00fap cho anh em tr\u00fang l\u1edbn, nhanh ch\u00f3ng v\u00e0o b\u1edd. Ch\u00fac anh em may m\u1eafn v\u00e0 th\u00e0nh c\u00f4ng v\u1edbi con s\u1ed1 m\u00e0 m\u00ecnh \u0111\u00e3 ch\u1ecdn!<\/p>\n