1001 toán tư duy lớp 5

["1001 B\u00c0I TO\u00c1N T\u01af DUY V\u00ed d\u1ee5 2 B\u00e0i gi\u1ea3i sdfg 101","1001 B\u00c0I TO\u00c1N T\u01af DUY B\u1ed8 C\u00c2U H\u1eceI TR\u1eaeC NGHI\u1ec6M C\u00e2u 1: Th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh: 927 \u2013 ( 180 + 427 ) C\u00e2u 2: \u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng \u0111\u1ec3 ho\u00e0n th\u00e0nh ph\u00e9p t\u00ednh sdfg C\u00e2u 3: T\u00ednh nhanh: 3333 X 8888 : 4444 102","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 4: X\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed d\u1ea5u ch\u01b0a \u0111\u00fang trong c\u00f4ng th\u1ee9c v\u00e0 s\u1eeda l\u1ea1i: C\u00e2u 5: Th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh: 45 X 7 + 77 sdfg C\u00e2u 6: T\u00ecm \u0111i\u1ec3m sai v\u00e0 s\u1eeda l\u1ea1i cho \u0111\u00fang c\u00f4ng th\u1ee9c sau: C\u00e2u 7: C\u00f4ng th\u1ee9c n\u00e0o sau \u0111\u00e2y ch\u01b0a \u0111\u00fang? (1) a x ( b \u2013 c ) = a x b + a x c (2) a : b x c = a x c : b (3) a \u2013 ( b \u2013 c ) = a \u2013 b + c (4) a \u2013 b : c = a \u2013 ( b : c ) 103","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 8: Th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh sau b\u1eb1ng c\u00e1ch t\u00ednh nhanh: C\u00e2u 9: T\u00ednh nhanh: 72 X 187 : 11 : 9 sdfg C\u00e2u 10: Th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh: C\u00e2u 11: C\u00f3 28 con g\u00e0 v\u00e0 con th\u1ecf, t\u1ea5t c\u1ea3 c\u00f3 80 c\u00e1i ch\u00e2n. T\u00ednh s\u1ed1 g\u00e0? 104","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 12: C\u00f3 45 xe \u00f4 t\u00f4 v\u00e0 xe m\u00e1y trong b\u00e3i \u0111\u1ed7 xe. C\u00f3 t\u1ea5t c\u1ea3 140 b\u00e1nh xe c\u00e1c lo\u1ea1i. H\u1ecfi c\u00f3 bao nhi\u00eau xe \u00f4 t\u00f4? C\u00e2u 13: M\u1ed9t v\u1eadn \u0111\u1ed9ng vi\u00ean b\u1eafn s\u00fang trong m\u1ed9t l\u1ea7n t\u1eadp hu\u1ea5n ph\u1ea3i b\u1eafn t\u1ea5t c\u1ea3 50 vi\u00ean \u0111\u1ea1n. M\u1ed7i vi\u00ean tr\u00fang \u0111\u00edch \u0111\u01b0\u1ee3c c\u1ed9ng 20 \u0111i\u1ec3m, m\u1ed7i vi\u00ean tr\u01b0\u1ee3t \u0111\u00edch b\u1ecb tr\u1eeb 10 \u0111i\u1ec3m. sdfg Sau khi b\u1eafn h\u1ebft 50 vi\u00ean \u0111\u1ea1n v\u1eadn \u0111\u1ed9ng vi\u00ean \u0111\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c 850 \u0111i\u1ec3m. H\u1ecfi v\u1eadn \u0111\u1ed9ng vi\u00ean \u0111\u00f3 b\u1eafn tr\u00fang \u0111\u00edch bao nhi\u00eau vi\u00ean? C\u00e2u 14: 5 c\u00e1i b\u00e1nh kem v\u00e0 10 h\u1ed9p k\u1eb9o c\u00f3 gi\u00e1 225 \u0111\u00f4-la. Gi\u00e1 1 c\u00e1i b\u00e1nh kem \u0111\u1eaft h\u01a1n 1 h\u1ed9p k\u1eb9o 12 \u0111\u00f4-la. H\u1ecfi 1 c\u00e1i b\u00e1nh kem c\u00f3 gi\u00e1 bao nhi\u00eau? 105","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 15: An b\u1ecf ra 55 \u0111\u00f4-la mua 15 quy\u1ec3n truy\u1ec7n gi\u00e1 2 \u0111\u00f4- la v\u00e0 7 \u0111\u00f4-la. H\u1ecfi c\u1eadu \u1ea5y \u0111\u00e3 mua bao nhi\u00eau quy\u1ec3n truy\u1ec7n 2 \u0111\u00f4-la? Bao nhi\u00eau quy\u1ec3n truy\u1ec7n 7 \u0111\u00f4-la? C\u00e2u 16: M\u1ed9t v\u00e9 xe bu\u00fdt t\u1edbi th\u1ecb tr\u1ea5n A gi\u00e1 15 \u0111\u00f4 la. M\u1ed9t v\u00e9 xsdefgbu\u00fdt t\u1edbi th\u1ecb tr\u1ea5n B gi\u00e1 8 \u0111\u00f4 la. \u00d4ng An tr\u1ea3 160 \u0111\u00f4 la mua 13 v\u00e9 xe bu\u00fdt c\u00e1c lo\u1ea1i. H\u1ecfi \u00f4ng \u1ea5y \u0111\u00e3 mua bao nhi\u00eau v\u00e9 t\u1edbi th\u1ecb tr\u1ea5n B? C\u00e2u 17: MiMi c\u00f3 60 \u0111\u1ed3ng m\u1ec7nh gi\u00e1 1 \u0111\u00f4-la, 2 \u0111\u00f4-la, 5 \u0111\u00f4- la c\u00f9ng \u0111\u1ec3 trong v\u00ed. T\u1ea5t c\u1ea3 s\u1ed1 ti\u1ec1n n\u00e0y c\u00f3 gi\u00e1 tr\u1ecb 160 \u0111\u00f4- la. S\u1ed1 \u0111\u1ed3ng ti\u1ec1n m\u1ec7nh gi\u00e1 1 \u0111\u00f4-la b\u1eb1ng v\u1edbi s\u1ed1 ti\u1ec1n m\u1ec7nh gi\u00e1 5 \u0111\u00f4-la. H\u1ecfi MiMi c\u00f3 bao nhi\u00eau \u0111\u1ed3ng ti\u1ec1n m\u1ed7i lo\u1ea1i? 106","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 18: Quy\u1ec3n t\u1eadp gi\u00e1 7 \u0111\u00f4-la, b\u00fat gi\u00e1 4 \u0111\u00f4-la. Minh mua h\u1ebft 94 \u0111\u00f4-la cho 16 v\u1eeba t\u1eadp v\u1eeba b\u00fat. H\u1ecfi Minh mua bao nhi\u00eau c\u00e2y b\u00fat v\u00e0 bao nhi\u00eau quy\u1ec3n t\u1eadp? C\u00e2u 19: B\u00e1c To\u00e0n mua 5 c\u00e1i b\u00e0n v\u00e0 5 c\u00e1i gh\u1ebf v\u1edbi t\u1ed5ng 3tsdi0\u1ec1fgn\u0111p\u00f4h-l\u1ea3ai. tr\u1ea3 l\u00e0 310 \u0111\u00f4-la. Gi\u00e1 1 c\u00e1i b\u00e0n \u0111\u1eaft h\u01a1n 1 c\u00e1i gh\u1ebf N\u1ebfu mua 1 c\u00e1i b\u00e0n v\u00e0 2 c\u00e1i gh\u1ebf th\u00ec h\u1ebft bao nhi\u00eau ti\u1ec1n? C\u00e2u 20: AnAn th\u1ef1c hi\u1ec7n b\u00e0i ki\u1ec3m tra c\u00f3 45 c\u00e2u h\u1ecfi. M\u1ed7i c\u00e2u tr\u1ea3 l\u1eddi \u0111\u00fang \u0111\u01b0\u1ee3c c\u1ed9ng 6 \u0111i\u1ec3m, tr\u1ea3 l\u1eddi sai tr\u1eeb 3 \u0111i\u1ec3m. B\u1ea1n \u0111\u01b0\u1ee3c 180 \u0111i\u1ec3m. H\u1ecfi b\u1ea1n tr\u1ea3 l\u1eddi bao nhi\u00eau c\u00e2u \u0111\u00fang? 107","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 21: T\u00ecm s\u1ed1 c\u00f2n thi\u1ebfu trong d\u00e3y s\u1ed1: 4, 5, 7, 10, ____ C\u00e2u 22: T\u00ecm s\u1ed1 c\u00f2n thi\u1ebfu trong d\u00e3y s\u1ed1: sdfg C\u00e2u 23: T\u00ecm s\u1ed1 c\u00f2n thi\u1ebfu trong d\u00e3y s\u1ed1: 5, 20, 50, 110, ___ C\u00e2u 24: T\u00ecm s\u1ed1 c\u00f2n thi\u1ebfu trong h\u00ecnh: 108","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 25: T\u00ecm s\u1ed1 c\u00f2n thi\u1ebfu trong h\u00ecnh: C\u00e2u 26: T\u00ecm s\u1ed1 c\u00f2n thi\u1ebfu trong h\u00ecnh: sdfg C\u00e2u 27: T\u00ecm s\u1ed1 c\u00f2n thi\u1ebfu trong h\u00ecnh: 109","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 28: Ch\u1ecdn tam gi\u00e1c c\u00f3 quy lu\u1eadt: S\u1ed1 \u1edf gi\u1eefa b\u1eb1ng t\u00edch hai s\u1ed1 \u1edf \u0111\u00e1y tr\u1eeb s\u1ed1 \u1edf \u0111\u1ec9nh. C\u00e2u 29: T\u00ecm s\u1ed1 c\u00f2n thi\u1ebfu trong h\u00ecnh: sdfg C\u00e2u 30: T\u00ecm s\u1ed1 c\u00f2n thi\u1ebfu trong h\u00ecnh: 110","1001 B\u00c0I TO\u00c1N T\u01af DUY \u0110\u00c1P \u00c1N 1 A 6B 11A 16C 21C 2 C 7D 12B 17C 22A 3D 8B 13C 18A 23B 4C 9B 14A 19A 24A 5B 10A 15B 20C 25C 26 B 27B 28D 29A 30C 2 C 7A 12A 17A 22A 3DT\u1ea3i App8CHoc24713AKids \u0111\u1ec318xBem vide23oD h\u01b0\u1edbng d\u1eabn gi\u1ea3i chi ti\u1ebft nh\u00e9! 4B 9B 14C 19C 24C 5A 10D 15A 20B 25A 111","1001 B\u00c0I TO\u00c1N T\u01af DUY S\u1ed0 NGUY\u00caN T\u1ed0. D\u00c3Y S\u1ed0. LOGIC KI\u1ebeN TH\u1ee8C TR\u1eccNG T\u00c2M B\u00e0i to\u00e1n th\u1eeba v\u00e0 thi\u1ebfu. S\u1eed d\u1ee5ng d\u1eef ki\u1ec7n \\\"th\u1eeba\\\", \\\"thi\u1ebfu\\\" c\u1ee7a b\u00e0i to\u00e1n \u0111\u1ec3 t\u00ecm m\u1ed7i li\u00ean h\u1ec7 c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng trong b\u00e0i to\u00e1n. V\u00e0 c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 h\u00ecnh v\u1ebd \u0111\u1ec3 bi\u1ec3u di\u1ec5n v\u00e0 \u0111\u01b0a v\u1ec1 c\u00e1c d\u1ea1ng to\u00e1n quen stdhfgu\u1ed9c \u0111\u1ec3 gi\u1ea3i b\u00e0i to\u00e1n. V\u00ed d\u1ee5 1 112","1001 B\u00c0I TO\u00c1N T\u01af DUY B\u00e0i gi\u1ea3i sdfg V\u00ed d\u1ee5 2 113","1001 B\u00c0I TO\u00c1N T\u01af DUY D\u00e3y s\u1ed1 c\u00e1ch \u0111\u1ec1u sdfg V\u00ed d\u1ee5 1 V\u00ed d\u1ee5 2 114","1001 B\u00c0I TO\u00c1N T\u01af DUY S\u1ed1 nguy\u00ean t\u1ed1 Kh\u00e1i ni\u1ec7m V\u00ed d\u1ee5 : S\u1ed1 nguy\u00ean t\u1ed1 trong ph\u1ea1m vi 10 B\u00e0i gi\u1ea3i 1, 2, 3, 5, 7, 9 sdfg Ph\u00e9p chia h\u1ebft D\u1ea5u hi\u1ec7u chia h\u1ebft cho 3 D\u1ea5u hi\u1ec7u chia h\u1ebft cho 9 D\u1ea5u hi\u1ec7u chia h\u1ebft cho 4 115","1001 B\u00c0I TO\u00c1N T\u01af DUY D\u1ea5u hi\u1ec7u chia h\u1ebft cho 25 D\u1ea5u hi\u1ec7u chia h\u1ebft cho 8 D\u1ea5u hi\u1ec7u chia h\u1ebft cho 125 sdfg D\u1ea5u hi\u1ec7u chia h\u1ebft cho 7 ho\u1eb7c 13 D\u1ea5u hi\u1ec7u chia h\u1ebft cho 11 116","1001 B\u00c0I TO\u00c1N T\u01af DUY V\u00ed d\u1ee5 1 V\u00ed d\u1ee5 2 sdfg V\u00ed d\u1ee5 3 117","1001 B\u00c0I TO\u00c1N T\u01af DUY B\u1ed8 C\u00c2U H\u1eceI TR\u1eaeC NGHI\u1ec6M C\u00e2u 1: T\u00ecm s\u1ed1 h\u1ea1ng th\u1ee9 42 c\u1ee7a d\u00e3y s\u1ed1: 2,4,6,8,10,... C\u00e2u 2: T\u00ecm s\u1ed1 h\u1ea1ng th\u1ee9 32 c\u1ee7a d\u00e3y s\u1ed1: 3,5,7,9,11,... C\u00e2u 3: T\u00ecm s\u1ed1 h\u1ea1ng th\u1ee9 28 c\u1ee7a d\u00e3y s\u1ed1: 118","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 4: S\u1ed1 189 l\u00e0 s\u1ed1 h\u1ea1ng th\u1ee9 bao nhi\u00eau c\u1ee7a d\u00e3y s\u1ed1: C\u00e2u 5: S\u1ed1 291 l\u00e0 s\u1ed1 h\u1ea1ng th\u1ee9 bao nhi\u00eau c\u1ee7a d\u00e3y s\u1ed1: 4,11,18,25,32,... C\u00e2u 6: T\u00ednh t\u1ed5ng 119","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 7: \u1ede 1 l\u1edbp h\u1ecdc, n\u1ebfu x\u1ebfp m\u1ed7i b\u00e0n 5 h\u1ecdc sinh th\u00ec c\u00f3 19 h\u1ecdc sinh ch\u01b0a c\u00f3 ch\u1ed7 ng\u1ed3i. N\u1ebfu x\u1ebfp m\u1ed7i b\u00e0n 7 h\u1ecdc sinh th\u00ec 7 h\u1ecdc sinh ch\u01b0a c\u00f3 ch\u1ed7 ng\u1ed3i. H\u1ecfi l\u1edbp h\u1ecdc c\u00f3 bao nhi\u00eau h\u1ecdc sinh? C\u00e2u 8: B\u00e0 \u0111i ch\u1ee3 v\u1ec1 v\u00e0 mua m\u1ed9t \u00edt b\u00e1nh cho c\u00e1c ch\u00e1u trong nh\u00e0. N\u1ebfu b\u00e0 chia cho m\u1ed7i ch\u00e1u 2 c\u00e1i b\u00e1nh th\u00ec c\u00f2n d\u01b0 11 c\u00e1i b\u00e1nh, n\u1ebfu b\u00e0 chia m\u1ed7i ch\u00e1u 4 c\u00e1i b\u00e1nh th\u00ec l\u1ea1i thi\u1ebfu 3 c\u00e1i b\u00e1nh. H\u1ecfi b\u00e0 c\u00f3 bao nhi\u00eau c\u00e1i b\u00e1nh? C\u00e2u 9: Ng\u01b0\u1eddi nh\u00e2n vi\u00ean s\u1edf th\u00fa chia cho nh\u1eefng con kh\u1ec9 m\u1ed9t s\u1ed1 qu\u1ea3 chu\u1ed1i. N\u1ebfu anh chia m\u1ed7i con kh\u1ec9 2 qu\u1ea3 chu\u1ed1i th\u00ec d\u01b0 3 qu\u1ea3. N\u1ebfu chia m\u1ed7i con kh\u1ec9 4 qu\u1ea3 chu\u1ed1i th\u00ec ph\u1ea3i c\u1ea7n th\u00eam 1 n\u1eefa m\u1edbi \u0111\u1ee7. H\u1ecfi c\u00f3 bao nhi\u00eau con kh\u1ec9 v\u00e0 c\u00f3 bao nhi\u00eau qu\u1ea3 chu\u1ed1i? 120","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 10: M\u1ed9t r\u1ed5 t\u00e1o \u0111\u01b0\u1ee3c chu\u1ea9n b\u1ecb chia cho m\u1ed9t s\u1ed1 b\u1ea1n nh\u1ecf. N\u1ebfu m\u1ed7i b\u1ea1n l\u1ea5y 4 qu\u1ea3 t\u00e1o th\u00ec s\u1ebd th\u1eeba ra 12 qu\u1ea3 t\u00e1o. N\u1ebfu m\u1ed7i b\u1ea1n l\u1ea5y 5 qu\u1ea3 t\u00e1o th\u00ec s\u1ebd thi\u1ebfu 4 qu\u1ea3 t\u00e1o. H\u1ecfi c\u00f3 bao nhi\u00eau qu\u1ea3 t\u00e1o trong r\u1ed5? C\u00e2u 11: M\u1ed9t ng\u01b0\u1eddi \u0111i xe \u0111\u1ea1p t\u1edbi ch\u1ed7 l\u00e0m, n\u1ebfu \u0111i v\u1edbi v\u1eadn t\u1ed1c 250m\/ph\u00fat th\u00ec ng\u01b0\u1eddi \u0111\u00f3 \u0111\u1ebfn ch\u1ed7 l\u00e0m tr\u1ec5 5 ph\u00fat. N\u1ebfu \u0111i v\u1edbi v\u1eadn t\u1ed1c 300m\/ph\u00fat th\u00ec ng\u01b0\u1eddi \u0111\u00f3 t\u1edbi ch\u1ed7 l\u00e0m s\u1edbm 2 ph\u00fat. H\u1ecfi th\u1eddi gian d\u1ef1 ki\u1ebfn \u0111i c\u1ee7a ng\u01b0\u1eddi \u1ea5y l\u00e0 bao nhi\u00eau ph\u00fat? C\u00e2u 12: M\u1ed9t nh\u00f3m c\u00f4ng nh\u00e2n \u0111ang l\u00e1t \u0111\u00e1 m\u1ed9t con \u0111\u01b0\u1eddng m\u1edbi. S\u1ebd ph\u1ea3i m\u1ea5t th\u00eam 7 ng\u00e0y l\u00e1t \u0111\u00e1 n\u1ebfu h\u1ecd l\u00e1t 120m\/ng\u00e0y. C\u00f2n n\u1ebfu l\u00e1t \u0111\u01b0\u1ee3c 180m\/ng\u00e0y, h\u1ecd c\u00f3 th\u1ec3 ho\u00e0n th\u00e0nh tr\u01b0\u1edbc ti\u1ebfn \u0111\u1ed9 4 ng\u00e0y. H\u1ecfi s\u1ed1 ng\u00e0y d\u1ef1 ki\u1ebfn ho\u00e0n th\u00e0nh c\u00f4ng vi\u1ec7c? 121","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 13: C\u00f4 gi\u00e1o chia m\u1ed9t t\u00fai k\u1eb9o cho h\u1ecdc sinh. N\u1ebfu m\u1ed7i h\u1ecdc sinh \u0111\u01b0\u1ee3c chia 2 vi\u00ean k\u1eb9o, c\u00f4 gi\u00e1o s\u1ebd c\u00f2n th\u1eeba 11 vi\u00ean k\u1eb9o. N\u1ebfu m\u1ed7i h\u1ecdc sinh \u0111\u01b0\u1ee3c chia 3 vi\u00ean k\u1eb9o, c\u00f4 gi\u00e1o s\u1ebd c\u00f2n thi\u1ebfu 1 vi\u00ean k\u1eb9o. H\u1ecfi c\u00f4 gi\u00e1o c\u00f3 bao nhi\u00eau vi\u00ean k\u1eb9o? C\u00e2u 14: H\u1ecdc sinh c\u1ee7a tr\u01b0\u1eddng M\u1eabu gi\u00e1o Hogwarts \u0111ang chu\u1ea9n b\u1ecb \u0111i d\u00e3 ngo\u1ea1i. N\u1ebfu m\u1ed7i xe bu\u00fdt \u0111\u00f3n 32 em, 10 em b\u00e9 s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c l\u00ean xe. N\u1ebfu m\u1ed7i xe bu\u00fdt \u0111\u00f3n 42 em, s\u1ebd thi\u1ebfu 10 em m\u1edbi \u0111\u1ea7y xe. H\u1ecfi nh\u00e0 tr\u01b0\u1eddng c\u1ea7n ph\u1ea3i thu\u00ea bao nhi\u00eau xe bu\u00fdt? 122","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 15: \u0110\u1ec3 ch\u1edf h\u1ebft g\u1ea1o trong kho c\u1ea7n m\u1ed9t s\u1ed1 ng\u00e0y. N\u1ebfu m\u1ed9t ng\u00e0y ch\u1edf \u0111\u01b0\u1ee3c 40 t\u1ea5n g\u1ea1o th\u00ec ho\u00e0n th\u00e0nh xong k\u1ebf ho\u1ea1ch tr\u1ec5 h\u01a1n 1 ng\u00e0y. N\u1ebfu m\u1ed9t ng\u00e0y \u0111\u01b0\u1ee3c 80 t\u1ea5n g\u1ea1o th\u00ec ho\u00e0n th\u00e0nh xong k\u1ebf ho\u1ea1ch s\u1edbm h\u01a1n 1 ng\u00e0y. H\u1ecfi s\u1ed1 ng\u00e0y d\u1ef1 ki\u1ebfn \u0111\u1ec3 ch\u1edf h\u1ebft s\u1ed1 g\u1ea1o trong kho? C\u00e2u 16: Trong m\u1ed9t d\u1ef1 \u00e1n tr\u1ed3ng c\u00e2y, m\u1ed7i t\u00ecnh nguy\u1ec7n vi\u00ean tr\u1ed3ng s\u1ed1 c\u00e2y nh\u01b0 nhau. N\u1ebfu m\u1ed7i ng\u01b0\u1eddi tr\u1ed3ng 5 c\u00e2y, th\u00ec s\u1ebd c\u00f2n l\u1ea1i 9 c\u00e2y. N\u1ebfu m\u1ed7i ng\u01b0\u1eddi tr\u1ed3ng 7 c\u00e2y, th\u00ec s\u1ebd c\u00f2n l\u1ea1i 3 c\u00e2y. H\u1ecfi c\u00f3 bao nhi\u00eau c\u00e2y c\u1ea7n \u0111\u01b0\u1ee3c tr\u1ed3ng? 123","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 17: \u0110\u00e2u l\u00e0 s\u1ed1 chia h\u1ebft cho 3 trong c\u00e1c s\u1ed1 sau? C\u00e2u 18: \u0110\u00e2u l\u00e0 s\u1ed1 chia h\u1ebft cho 9 trong c\u00e1c s\u1ed1 sau? sdfg C\u00e2u 19: C\u00f3 bao nhi\u00eau s\u1ed1 trong c\u00e1c s\u1ed1 sau chia h\u1ebft cho 3 nh\u01b0ng kh\u00f4ng chia h\u1ebft cho 9? 248931, 2703, 432, 924, 90918, 73428 124","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 20: L\u1edbp 2C c\u00f3 45 h\u1ecdc sinh, l\u1edbp mu\u1ed1n x\u1ebfp th\u00e0nh c\u00e1c h\u00e0ng m\u00e0 kh\u00f4ng d\u01b0 b\u1ea1n n\u00e0o. H\u1ecfi l\u1edbp 2C c\u00f3 th\u1ec3 x\u1ebfp th\u00e0nh bao nhi\u00eau h\u00e0ng trong c\u00e1c \u0111\u00e1p \u00e1n d\u01b0\u1edbi \u0111\u00e2y? C\u00e2u 21: C\u00f3 bao nhi\u00eau s\u1ed1 v\u1eeba chia h\u1ebft cho 3 v\u1eeba chia h\u1ebft cho 9 trong c\u00e1c s\u1ed1 sau? 324, 6273, 43269, 98342, 24837? sdfg C\u00e2u 22: \u0110\u00e2u l\u00e0 s\u1ed1 chia h\u1ebft cho 4? 125","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 23: Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang: C\u00e2u 24: Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang: sdfg C\u00e2u 25: C\u00f3 bao nhi\u00eau s\u1ed1 chia h\u1ebft cho 7 v\u00e0 13 trong c\u00e1c s\u1ed1 d\u01b0\u1edbi \u0111\u00e2y? 24 768, 2184, 24024, 60060, 29484, 18564, 65884 C\u00e2u 26: Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang: 126","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 27: \u0110i\u1ec1n v\u00e0o ch\u1ed7 tr\u1ed1ng ch\u1eef s\u1ed1 thi h\u1ee3p \u0111\u1ec3 s\u1ed1 n\u00e0y chia h\u1ebft cho 11? 26825\u2026 C\u00e2u 28: C\u00f3 bao nhi\u00eau s\u1ed1 chia h\u1ebft cho 3? sd4fg, 7, 9, 124, 324, 32987, 48432 C\u00e2u 29: C\u00f3 bao nhi\u00eau s\u1ed1 chia h\u1ebft cho 9 trong c\u00e1c s\u1ed1 sau: 56724, 89674, 22932, 2916, 31338 127","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 30: \u0110\u00e2u l\u00e0 s\u1ed1 v\u1eeba chia h\u1ebft cho 3 v\u00e0 chia h\u1ebft cho 9? C\u00e2u 31: \u0110\u00e2u l\u00e0 s\u1ed1 chia h\u1ebft cho 7? sdfg C\u00e2u 32: \u0110\u00e2u l\u00e0 s\u1ed1 chia h\u1ebft cho 11? C\u00e2u 33: C\u00f3 bao nhi\u00eau s\u1ed1 chia h\u1ebft cho 11 trong c\u00e1c s\u1ed1 d\u01b0\u1edbi \u0111\u00e2y? 1079, 10362, 6864, 35948, 1364, 3024 128","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 34: \u0110\u00e2u l\u00e0 s\u1ed1 chia h\u1ebft cho 4? C\u00e2u 35: \u0110\u00e2u l\u00e0 s\u1ed1 chia h\u1ebft 8 trong c\u00e1c s\u1ed1 sau? sdfg C\u00e2u 36: C\u00f3 bao nhi\u00eau s\u1ed1 chia h\u1ebft cho 125? 98750, 96452, 43250, 78342, 752375, 832500 129","1001 B\u00c0I TO\u00c1N T\u01af DUY \u0110\u00c1P \u00c1N 1A 6B 11D 16B 21D 2B 7A 12C 17A 22A 3C 8B 13C 18B 23A 4A 9C 14C 19C 24B 5C 10A 15A 20A 25C 26A 31C 36D 27D 32A 28A 33C 29B 34B 30A 35C T\u1ea3i App Hoc247 Kids \u0111\u1ec3 xem video h\u01b0\u1edbng d\u1eabn gi\u1ea3i chi ti\u1ebft nh\u00e9! 130"]