1001 toán tư duy lớp 1

["1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 5. Vi\u1ebft 1, 2, 3 bi\u1ec3u di\u1ec5n s\u1ed1 l\u01b0\u1ee3ng \u1edf m\u1ed7i nh\u00f3m theo th\u1ee9 t\u1ef1 t\u1eeb b\u00e9 \u0111\u1ebfn l\u1edbn. C\u00e1ch bi\u1ec3u di\u1ec5n d\u01b0\u1edbi \u0111\u00e2y \u0111\u00fang hay sai? C\u00e2u 6. Gi\u00e1 tr\u1ecb c\u1ee7a qu\u1ea3 d\u00e2u t\u00e2y l\u00e0: C\u00e2u 7. \u0110i\u1ec1n d\u1ea5u th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 ch\u1ea5m: 16cm + 4 cm ..... 28cm \u2013 10cm C\u00e2u 8. M\u1ed7i qu\u1ea3 t\u00e1o c\u00e2n n\u1eb7ng bao nhi\u00eau? 51","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 9. Ho\u00e0n th\u00e0nh y\u00eau c\u1ea7u sau: C\u00e2u 10. Ng\u00e0y h\u00f4m sau c\u1ee7a ng\u00e0y mai l\u00e0 th\u1ee9 Th\u1ee9 T\u01b0. V\u1eady h\u00f4m nay l\u00e0 th\u1ee9 m\u1ea5y? C\u00e2u 11. T\u00ednh \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng m\u00e0u \u0111\u1ecf: C\u00e2u 12. B\u1ea1n nh\u1ecf h\u1ecdc b\u00e0i l\u00fac m\u1ea5y gi\u1edd? A B C 52","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 13. Khi kim ng\u1eafn ch\u1ec9 s\u1ed1 9 v\u00e0 kim d\u00e0i \u0111ang ch\u1ec9 s\u1ed1 12, th\u00ec \u0111\u1ed3ng h\u1ed3 \u0111\u00f3 \u0111ang ch\u1ec9 m\u1ea5y gi\u1edd? C\u00e2u 14. N\u1ebfu th\u1ee9 N\u0103m l\u00e0 sinh nh\u1eadt c\u1ee7a Lan v\u00e0 4 ng\u00e0y sau l\u00e0 sinh nh\u1eadt c\u1ee7a B\u00ecnh th\u00ec ng\u00e0y sinh nh\u1eadt c\u1ee7a B\u00ecnh v\u00e0o th\u1ee9 m\u1ea5y? C\u00e2u 15. \u0110\u1ed3ng h\u1ed3 n\u00e0o \u0111ang ch\u1ec9 6 gi\u1edd? C\u00e2u 16. M\u1ed9t s\u1ee3i d\u00e2y d\u00e0i 24cm, ng\u01b0\u1eddi ta c\u1eaft s\u1ee3i d\u00e2y \u0111i 8 cm. H\u1ecfi s\u1ee3i d\u00e2y c\u00f2n l\u1ea1i bao nhi\u00eau cm? 53","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 17. \u0110\u1ed3ng h\u1ed3 n\u00e0o ch\u1ec9 5 gi\u1edd 30 ph\u00fat? C\u00e2u 18. L\u00fac 8 gi\u1edd r\u01b0\u1ee1i, kim gi\u1edd v\u00e0 kim ph\u00fat ch\u1ec9 s\u1ed1 m\u1ea5y? A B C C\u00e2u 19. L\u00fac kim gi\u1edd ch\u1ec9 v\u00e0o s\u1ed1 8, kim ph\u00fat ch\u1ec9 v\u00e0o s\u1ed1 6, l\u00fac \u0111\u00f3 l\u00e0 m\u1ea5y gi\u1edd? C\u00e2u 20. Minh \u0103n c\u01a1m t\u1ed1i xong l\u00e0 6 gi\u1edd 30 ph\u00fat. Sau 10 ph\u00fat n\u1eefa, Minh s\u1ebd b\u1eaft \u0111\u1ea7u l\u00e0m b\u00e0i. H\u1ecfi Minh b\u1eaft \u0111\u1ea7u l\u00e0m b\u00e0i l\u00fac m\u1ea5y gi\u1edd? 54","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 21. N\u1ebfu h\u00f4m nay l\u00e0 th\u1ee9 Ba, ng\u00e0y 14, th\u00ec h\u00f4m qua l\u00e0 th\u1ee9 m\u1ea5y, ng\u00e0y bao nhi\u00eau? C\u00e2u 22. C\u1ee9 2 ch\u1eadu hoa t\u1ea1o th\u00e0nh 1 kho\u1ea3ng c\u00e1ch, v\u1eady c\u00f3 bao nhi\u00eau kho\u1ea3ng c\u00e1ch gi\u1eefa 6 ch\u1eadu hoa li\u00ean ti\u1ebfp? C\u00e2u 23. M\u1ed7i ng\u00e0y bu\u1ed5i s\u00e1ng, tr\u00ean \u0111\u01b0\u1eddng \u0111i h\u1ecdc, An \u0111i qua 8 c\u1ecdc giao th\u00f4ng. H\u1ecfi c\u00f3 bao nhi\u00eau kho\u1ea3ng c\u00e1ch gi\u1eefa 8 c\u1ecdc giao th\u00f4ng? A B C 55","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 24. B\u00e0 ngo\u1ea1i mu\u1ed1n tr\u1ed3ng 5 c\u00e2y t\u00e1o trong v\u01b0\u1eddn. M\u1ed7i c\u00e2y c\u00e1ch nhau 1m. H\u1ecfi kho\u1ea3ng c\u00e1ch t\u1eeb c\u00e2y t\u00e1o th\u1ee9 nh\u1ea5t \u0111\u1ebfn c\u00e2y t\u00e1o th\u1ee9 n\u0103m l\u00e0 bao nhi\u00eau m\u00e9t? A. B. C. C\u00e2u 25. Con \u0111\u01b0\u1eddng ph\u00eda tr\u01b0\u1edbc tr\u01b0\u1eddng c\u00f3 4 c\u00e1i c\u00e2y. M\u1ed7i c\u00e1i c\u00e2y c\u00e1ch nhau 4m. H\u1ecfi c\u00e2y th\u1ee9 t\u01b0 c\u00e1ch c\u00e2y th\u1ee9 nh\u1ea5t bao nhi\u00eau m\u00e9t. 56","1001 B\u00c0I TO\u00c1N T\u01af DUY \u0110\u00e1p \u00e1n ch\u1ee7 \u0111\u1ec1 3 1B 6B 11A 16C 21C 2D 7B 12B 17A 22C 3A 8C 13B 18B 23B 4C 9A 14A 19B 24A 5A 10D 15A 20C 25A T\u1ea3i App Hoc247 Kids \u0111\u1ec3 xem video h\u01b0\u1edbng d\u1eabn gi\u1ea3i chi ti\u1ebft nh\u00e9! 57","1001 B\u00c0I TO\u00c1N T\u01af DUY CH\u1ee6 \u0110\u1ec0 4 B\u00c0I TO\u00c1N QUY LU\u1eacT - LOGIC Ki\u1ebfn th\u1ee9c c\u1ea7n nh\u1edb Quy lu\u1eadt a) Quy lu\u1eadt t\u0103ng d\u1ea7n V\u00ed d\u1ee5: T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu. B\u00e0i gi\u1ea3i 58","1001 B\u00c0I TO\u00c1N T\u01af DUY b) Quy lu\u1eadt gi\u1ea3m d\u1ea7n V\u00ed d\u1ee5: T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu. B\u00e0i gi\u1ea3i 59","1001 B\u00c0I TO\u00c1N T\u01af DUY c) Quy lu\u1eadt h\u00ecnh d\u1ea1ng Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i - T\u00ecm quy lu\u1eadt c\u1ee7a d\u00e3y h\u00ecnh. - T\u1eeb quy lu\u1eadt \u0111\u00f3, suy ra h\u00ecnh c\u1ea7n t\u00ecm. V\u00ed d\u1ee5: T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu. B\u00e0i gi\u1ea3i d) Quy lu\u1eadt m\u00e0u s\u1eafc Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i - T\u00ecm quy lu\u1eadt c\u1ee7a d\u00e3y h\u00ecnh d\u1ef1a v\u00e0o m\u00e0u s\u1eafc. - T\u1eeb quy lu\u1eadt \u0111\u00f3, suy ra h\u00ecnh c\u1ea7n t\u00ecm. V\u00ed d\u1ee5: T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu. 60","1001 B\u00c0I TO\u00c1N T\u01af DUY B\u00e0i gi\u1ea3i e) Quy lu\u1eadt k\u00edch th\u01b0\u1edbc Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i - T\u00ecm quy lu\u1eadt c\u1ee7a d\u00e3y h\u00ecnh d\u1ef1a v\u00e0o k\u00edch th\u01b0\u1edbc. - T\u1eeb quy lu\u1eadt \u0111\u00f3, suy ra h\u00ecnh c\u1ea7n t\u00ecm. V\u00ed d\u1ee5: T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu. B\u00e0i gi\u1ea3i 61","1001 B\u00c0I TO\u00c1N T\u01af DUY B\u00e0i to\u00e1n h\u00ecnh v\u1ebd c\u00f3 quy lu\u1eadt Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i - T\u00ecm quy lu\u1eadt c\u1ee7a d\u00e3y h\u00ecnh. - T\u1eeb quy lu\u1eadt \u0111\u00f3, suy ra h\u00ecnh c\u1ea7n t\u00ecm. V\u00ed d\u1ee5: T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu. B\u00e0i gi\u1ea3i Quan s\u00e1t v\u00e0o d\u00e3y h\u00ecnh ta th\u1ea5y, c\u00e1c ng\u00f4i sao \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp xen k\u1ebd v\u1edbi c\u00e1c h\u00ecnh tr\u00f2n. - Kho\u1ea3ng c\u00e1ch th\u1ee9 nh\u1ea5t gi\u1eefa hai ng\u00f4i sao l\u00e0 1 h\u00ecnh tr\u00f2n. - Kho\u1ea3ng c\u00e1ch th\u1ee9 hai c\u00f3 2 h\u00ecnh tr\u00f2n \u1edf gi\u1eefa. - Kho\u1ea3ng c\u00e1ch th\u1ee9 ba c\u00f3 3 h\u00ecnh tr\u00f2n \u1edf gi\u1eefa. \u00e0 V\u1eady ta c\u00f3 quy lu\u1eadt \u0111\u00f3 l\u00e0 \u201ctheo th\u1ee9 t\u1ef1 kho\u1ea3ng c\u00e1ch gi\u1eefa hai ng\u00f4i sao, ta c\u00f3 s\u1ed1 h\u00ecnh tr\u00f2n t\u01b0\u01a1ng \u1ee9ng\u201d. T\u1eeb \u0111\u00f3 ta c\u00f3 d\u00e3y h\u00ecnh nh\u01b0 sau: 62","1001 B\u00c0I TO\u00c1N T\u01af DUY B\u00e0i to\u00e1n h\u00ecnh v\u1ebd c\u00f3 quy lu\u1eadt Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i - T\u00ecm quy lu\u1eadt c\u1ee7a d\u00e3y h\u00ecnh. - T\u1eeb quy lu\u1eadt \u0111\u00f3, suy ra h\u00ecnh c\u1ea7n t\u00ecm. V\u00ed d\u1ee5: T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu. B\u00e0i gi\u1ea3i Quan s\u00e1t v\u00e0o d\u00e3y h\u00ecnh ta th\u1ea5y, c\u00e1c ng\u00f4i sao \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp xen k\u1ebd v\u1edbi c\u00e1c h\u00ecnh tr\u00f2n. - Kho\u1ea3ng c\u00e1ch th\u1ee9 nh\u1ea5t gi\u1eefa hai ng\u00f4i sao l\u00e0 1 h\u00ecnh tr\u00f2n. - Kho\u1ea3ng c\u00e1ch th\u1ee9 hai c\u00f3 2 h\u00ecnh tr\u00f2n \u1edf gi\u1eefa. - Kho\u1ea3ng c\u00e1ch th\u1ee9 ba c\u00f3 3 h\u00ecnh tr\u00f2n \u1edf gi\u1eefa. \u00e0 V\u1eady ta c\u00f3 quy lu\u1eadt \u0111\u00f3 l\u00e0 \u201ctheo th\u1ee9 t\u1ef1 kho\u1ea3ng c\u00e1ch gi\u1eefa hai ng\u00f4i sao, ta c\u00f3 s\u1ed1 h\u00ecnh tr\u00f2n t\u01b0\u01a1ng \u1ee9ng\u201d. T\u1eeb \u0111\u00f3 ta c\u00f3 d\u00e3y h\u00ecnh nh\u01b0 sau: 63","1001 B\u00c0I TO\u00c1N T\u01af DUY LUY\u1ec6N T\u1eacP C\u00e2u 1. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu \u0111\u1ec3 \u0111\u00fang quy lu\u1eadt? C\u00e2u 2. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu \u0111\u1ec3 \u0111\u00fang quy lu\u1eadt? C\u00e2u 3. H\u00ecnh n\u00e0o d\u01b0\u1edbi \u0111\u00e2y \u0111\u00e3 s\u1eafp x\u1ebfp \u0111\u00fang theo quy lu\u1eadt gi\u1ea3m d\u1ea7n? C\u00e2u 4. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu \u0111\u1ec3 \u0111\u00fang quy lu\u1eadt? 64","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 5. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu \u0111\u1ec3 \u0111\u00fang quy lu\u1eadt? C\u00e2u 6. H\u00ecnh n\u00e0o d\u01b0\u1edbi \u0111\u00e2y \u0111\u00e3 s\u1eafp x\u1ebfp \u0111\u00fang theo quy lu\u1eadt t\u0103ng d\u1ea7n? C\u00e2u7. H\u00ecnh n\u00e0o d\u01b0\u1edbi \u0111\u00e2y \u0111\u00e3 s\u1eafp x\u1ebfp \u0111\u00fang theo quy lu\u1eadt t\u0103ng d\u1ea7n? C\u00e2u 8. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu: 65","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 9. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu: A B C C\u00e2u 10. T\u00ecm h\u00ecnh \u0111\u00fang quy lu\u1eadt: C\u00e2u 11. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu: A B C C\u00e2u 12. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu: A B 66","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 13. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu: A B C\u00e2u 14. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu: A B C\u00e2u 15. Trong m\u1ed9t h\u00e0ng c\u00f3 20 b\u1ea1n, b\u1ea1n Nam l\u00e0 ng\u01b0\u1eddi \u0111\u1ee9ng th\u1ee9 6 t\u1eeb d\u01b0\u1edbi l\u00ean. H\u1ecfi b\u1ea1n Nam l\u00e0 ng\u01b0\u1eddi \u0111\u1ee9ng th\u1ee9 bao nhi\u00eau t\u1eeb tr\u00ean xu\u1ed1ng? C\u00e2u 16. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu: A B 67","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 17. Trong m\u1ed9t d\u00e3y ph\u1ed1 c\u00f3 20 ng\u00f4i nh\u00e0. T\u00ednh t\u1eeb \u0111\u1ea7u ph\u1ed1 \u0111\u1ebfn cu\u1ed1i ph\u1ed1, nh\u00e0 An \u1edf v\u1ecb tr\u00ed th\u1ee9 7 v\u00e0 nh\u00e0 Nam \u1edf v\u1ecb tr\u00ed th\u1ee9 12. H\u1ecfi gi\u1eefa nh\u00e0 An v\u00e0 nh\u00e0 Nam c\u00f3 bao nhi\u00eau ng\u00f4i nh\u00e0? A B C C\u00e2u 18. C\u00e0nh tr\u00ean c\u00f3 15 con chim. C\u00e0nh d\u01b0\u1edbi c\u00f3 5 con chim. H\u1ecfi c\u00f3 t\u1ea5t c\u1ea3 bao nhi\u00eau con chim? A B C C\u00e2u 19. N\u0103m nay em 4 tu\u1ed5i, anh 9 tu\u1ed5i. H\u1ecfi sau 5 n\u0103m n\u1eefa anh h\u01a1n em bao nhi\u00eau tu\u1ed5i? C\u00e2u 20. H\u1ed3ng c\u00f3 16 que t\u00ednh, H\u1ed3ng \u0111\u01b0\u1ee3c b\u1ea1n cho th\u00eam 2 que t\u00ednh. H\u1ecfi H\u1ed3ng c\u00f3 t\u1ea5t c\u1ea3 bao nhi\u00eau que t\u00ednh? A B C 68","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 21. Ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang: A B C C\u00e2u 22. M\u1ed9t h\u00e0ng c\u00f3 25 b\u1ea1n, b\u00ean ph\u1ea3i Khang c\u00f3 4 b\u1ea1n. H\u1ecfi s\u1ed1 b\u1ea1n b\u00ean ph\u1ea3i hay b\u00ean tr\u00e1i b\u1ea1n Khang nhi\u1ec1u h\u01a1n v\u00e0 nhi\u1ec1u h\u01a1n bao nhi\u00eau? A B C C\u00e2u 23. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu: C\u00e2u 24. C\u00f3 bao nhi\u00eau con r\u00f9a \u1edf v\u1ecb tr\u00ed c\u1ea7n t\u00ecm? 69","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 25. T\u00ecm h\u00ecnh c\u00f2n thi\u1ebfu: 70","1001 B\u00c0I TO\u00c1N T\u01af DUY \u0110\u00e1p \u00e1n ch\u1ee7 \u0111\u1ec1 4 1B 6C 11C 16A 21A 2A 7B 12B 17C 22B 3A 8B 13A 18B 23A 4A 9A 14A 19A 24A 5B 10C 15A 20C 25B T\u1ea3i App Hoc247 Kids \u0111\u1ec3 xem video h\u01b0\u1edbng d\u1eabn gi\u1ea3i chi ti\u1ebft nh\u00e9! 71","1001 B\u00c0I TO\u00c1N T\u01af DUY CH\u1ee6 \u0110\u1ec0 5 S\u1ed0 V\u00c0 PH\u00c9P C\u1ed8NG TRONG PH\u1ea0M VI 10 Ki\u1ebfn th\u1ee9c c\u1ea7n nh\u1edb C\u00e1c s\u1ed1 trong ph\u1ea1m vi 10 - C\u00e1c s\u1ed1 trong ph\u1ea1m vi 10 l\u00e0 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10. V\u00ed d\u1ee5: \u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o b\u00f4ng hoa: B\u00e0i gi\u1ea3i 72","1001 B\u00c0I TO\u00c1N T\u01af DUY - T\u00e1ch \u2013 g\u1ed9p s\u1ed1 S\u01a1 \u0111\u1ed3 t\u00e1ch S\u01a1 \u0111\u1ed3 g\u1ed9p - So s\u00e1nh c\u00e1c s\u1ed1 0 < 1 < 2 < 3 < 4 < 5 < 6 < 7 < 8 < 9 < 10 V\u00ed d\u1ee5: \u0110i\u1ec1n d\u1ea5u th\u00edch h\u1ee3p v\u00e0o d\u1ea5u ch\u1ea5m h\u1ecfi: 73","1001 B\u00c0I TO\u00c1N T\u01af DUY B\u00e0i gi\u1ea3i Ph\u00e9p c\u1ed9ng, tr\u1eeb trong ph\u1ea1m vi 10 - T\u00ednh nhanh: V\u00ed d\u1ee5: \u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o c\u00e1c rau c\u1ee7 sau: B\u00e0i gi\u1ea3i - Ph\u00e9p c\u1ed9ng, ph\u00e9p tr\u1eeb nhi\u1ec1u s\u1ed1: Ki\u1ebfn th\u1ee9c: Th\u1ef1c hi\u1ec7n l\u1ea7n l\u01b0\u1ee3t c\u00e1c ph\u00e9p t\u00ednh t\u1eeb tr\u00e1i qua ph\u1ea3i. 74","1001 B\u00c0I TO\u00c1N T\u01af DUY V\u00ed d\u1ee5: T\u00ednh: B\u00e0i gi\u1ea3i B\u00e0i to\u00e1n th\u00eam b\u1edbt \u0111\u01a1n v\u1ecb - To\u00e1n th\u00eam: Th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh c\u1ed9ng V\u00ed d\u1ee5: B\u00e0i gi\u1ea3i 75","1001 B\u00c0I TO\u00c1N T\u01af DUY - To\u00e1n b\u1edbt: Th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh tr\u1eeb V\u00ed d\u1ee5: B\u00e0i gi\u1ea3i 76","1001 B\u00c0I TO\u00c1N T\u01af DUY LUY\u1ec6N T\u1eacP C\u00e2u 1. H\u00ecnh c\u00f3 2 con ong l\u00e0: C\u00e2u 2. \u0110i\u1ec1n d\u1ea5u th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng. A B C C\u00e2u 3. S\u1ed1 l\u1edbn nh\u1ea5t c\u00f3 m\u1ed9t ch\u1eef s\u1ed1 l\u00e0: C\u00e2u 4. S\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o ch\u1ed7 tr\u1ed1ng l\u00e0 : 8>\u2026>5 77","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 5. \u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ph\u00e9p t\u00ednh sau: A B C C\u00e2u 6. S\u1ed1 th\u00edch h\u1ee3p \u0111i\u1ec1n v\u00e0o ch\u1ed7 ch\u1ea5m l\u00e0: \u2026 + 7 = 10 C\u00e2u 7. L\u1eadp ph\u00e9p c\u1ed9ng ph\u00f9 h\u1ee3p t\u1eeb ba s\u1ed1 cho s\u1eb5n: A B C C\u00e2u 8. So s\u00e1nh r\u1ed3i \u0111i\u1ec1n d\u1ea5u th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng: 2+7\u20266 78","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 9. \u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ph\u00e9p t\u00ednh sau: A B C C\u00e2u 10. S\u1ed1 c\u00f2n thi\u1ebfu trong ph\u00e9p so s\u00e1nh b\u00ean d\u01b0\u1edbi l\u00e0: A B C C\u00e2u 11. \u0110i\u1ec1n d\u1ea5u th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 ch\u1ea5m: 3 + 6 \u2026 5 + 4. C\u00e2u 12. Th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh: A B C 79","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 13. K\u1ebft qu\u1ea3 c\u1ee7a ph\u00e9p t\u00ednh 8 - 4 - 2 l\u00e0: C\u00e2u 14. D\u1ea5u so s\u00e1nh th\u00edch h\u1ee3p l\u00e0: A B C C\u00e2u 15. Lan c\u00f3 10 ngh\u00ecn \u0111\u1ed3ng. Lan mua x\u00f4i h\u1ebft 5 ngh\u00ecn v\u00e0 mua k\u1eb9o h\u1ebft 2 ngh\u00ecn. H\u1ecfi Lan c\u00f2n l\u1ea1i bao nhi\u00eau ti\u1ec1n? C\u00e2u 16. Qu\u1ea3 t\u00e1o \u0111\u00e3 che m\u1ea5t s\u1ed1 n\u00e0o? A B C 80","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 17. \u0110\u00e2u l\u00e0 s\u1ed1 4? C\u00e2u 18. Tr\u00ean s\u00e2n c\u00f3 5 con g\u00e0, trong \u0111\u00f3 c\u00f3 1 con g\u00e0 m\u1eb9. H\u1ecfi c\u00f3 bao nhi\u00eau con g\u00e0 con? A B C C\u00e2u 19. C\u00f3 th\u1ec3 x\u1ebfp \u0111\u01b0\u1ee3c c\u00e1c s\u1ed1 n\u00e0o t\u1eeb 3 que t\u00ednh? C\u00e2u 20. C\u00f3 t\u1ea5t c\u1ea3 bao nhi\u00eau qu\u1ea3 bong b\u00f3ng? A B C 81","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 21. Tr\u00ean c\u00e2y c\u00f3 10 qu\u1ea3 xo\u00e0i. C\u00f3 4 qu\u1ea3 xo\u00e0i \u0111\u00e3 ch\u00edn. H\u1ecfi c\u00f2n bao nhi\u00eau qu\u1ea3 xo\u00e0i ch\u01b0a ch\u00edn? A B C C\u00e2u 22. S\u1ed1 8 c\u00f3 m\u1ea5y c\u00e1ch t\u00e1ch \u2013 g\u1ed9p? C\u00e2u 23. T\u1ed5 1 tr\u1ed3ng \u0111\u01b0\u1ee3c 3 c\u00e2y xanh, t\u1ed5 2 tr\u1ed3ng \u0111\u01b0\u1ee3c 4 c\u00e2y xanh, t\u1ed5 3 tr\u1ed3ng \u0111\u01b0\u1ee3c 3 c\u00e2y xanh v\u00e0 t\u1ed5 4 tr\u1ed3ng \u0111\u01b0\u1ee3c 4 c\u00e2y xanh. H\u1ecfi c\u1ea3 4 t\u1ed5 tr\u1ed3ng \u0111\u01b0\u1ee3c bao nhi\u00eau c\u00e2y xanh? A B C C\u00e2u 24. Qu\u1ea3 t\u00e1o \u0111\u00e3 che \u0111i s\u1ed1 n\u00e0o? A B C 82","1001 B\u00c0I TO\u00c1N T\u01af DUY \u0110\u00e1p \u00e1n ch\u1ee7 \u0111\u1ec1 5 1A 6A 11C 16A 21B 2A 7C 12B 17C 22A 3B 8A 13B 18A 23C 4A 9A 14B 19C 24A 5A 10A 15C 20B T\u1ea3i App Hoc247 Kids \u0111\u1ec3 xem video h\u01b0\u1edbng d\u1eabn gi\u1ea3i chi ti\u1ebft nh\u00e9! 83","1001 B\u00c0I TO\u00c1N T\u01af DUY CH\u1ee6 \u0110\u1ec0 6: H\u00ccNH H\u1eccC Ki\u1ebfn th\u1ee9c c\u1ea7n nh\u1edb V\u1ecb tr\u00ed v\u00e0 h\u00ecnh kh\u1ed1i - V\u00ed tr\u00ed: tr\u00e1i \u2013 ph\u1ea3i ; tr\u01b0\u1edbc \u2013 sau ; tr\u00ean \u2013 d\u01b0\u1edbi; \u1edf gi\u1eefa. V\u00ed d\u1ee5: - H\u00ecnh kh\u1ed1i: kh\u1ed1i l\u1eadp ph\u01b0\u01a1ng; kh\u1ed1i h\u1ed9p ch\u1eef nh\u1eadt. V\u00ed d\u1ee5: Kh\u1ed1i h\u1ed9p ch\u1eef nh\u1eadt Kh\u1ed1i l\u1eadp ph\u01b0\u01a1ng C\u00e1c h\u00ecnh c\u01a1 b\u1ea3n H\u00ecnh vu\u00f4ng, h\u00ecnh tr\u00f2n, h\u00ecnh ch\u1eef nh\u1eadt, h\u00ecnh tam gi\u00e1c 84","1001 B\u00c0I TO\u00c1N T\u01af DUY \u0110\u1ebfm h\u00ecnh Ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i: - \u0110\u00e1nh s\u1ed1 th\u1ee9 t\u1ef1 cho c\u00e1c h\u00ecnh b\u00ean trong. - \u0110\u1ebfm s\u1ed1 h\u00ecnh: h\u00ecnh \u0111\u01a1n \u00e0 h\u00ecnh gh\u00e9p t\u1eeb 2, 3, 4,\u2026h\u00ecnh nh\u1ecf. V\u00ed d\u1ee5: 85","1001 B\u00c0I TO\u00c1N T\u01af DUY LUY\u1ec6N T\u1eacP C\u00e2u 1. Trong h\u00ecnh \u1ea3nh n\u00e0o, con ch\u00f3 \u1edf b\u00ean ph\u1ea3i? C\u00e2u 2. \u0110\u1ed3 v\u1eadt n\u00e0o kh\u00f4ng c\u00f3 d\u1ea1ng l\u00e0 kh\u1ed1i h\u1ed9p ch\u1eef nh\u1eadt? 86","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 3. Trong h\u00ecnh \u1ea3nh n\u00e0o, con g\u00e0 \u1edf b\u00ean ph\u1ea3i c\u1ee7a con heo? C\u00e2u 4. H\u00ecnh \u1ea3nh d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c x\u1ebfp t\u1eeb c\u00e1c kh\u1ed1i l\u1eadp ph\u01b0\u01a1ng v\u00e0 bao nhi\u00eau kh\u1ed1i h\u1ed9p ch\u1eef nh\u1eadt? A. B. C. 87","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 5. V\u1eadt n\u00e0o c\u00f3 d\u1ea1ng h\u00ecnh ch\u1eef nh\u1eadt? C\u00e2u 6. T\u00ecm v\u1eadt c\u00f3 d\u1ea1ng h\u00ecnh tam gi\u00e1c trong c\u00e1c v\u1eadt d\u01b0\u1edbi \u0111\u00e2y. A B C C\u00e2u 7. H\u00ecnh n\u00e0o g\u1ed3m c\u00e1c v\u1eadt c\u00f3 d\u1ea1ng h\u00ecnh tr\u00f2n? C\u00e2u 8. H\u00ecnh n\u00e0o c\u00f3 c\u1ea3 4 h\u00ecnh c\u01a1 b\u1ea3n \u0111\u00e3 h\u1ecdc? 88","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 9. C\u1eaft theo \u0111\u01b0\u1eddng n\u00e0o, th\u00ec t\u1edd gi\u1ea5y s\u1ebd chia th\u00e0nh 2 h\u00ecnh tam gi\u00e1c? C\u00e2u 10. H\u00ecnh n\u00e0o c\u00f3 5 h\u00ecnh tam gi\u00e1c? C\u00e2u 11. H\u00ecnh d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c x\u1ebfp t\u1eeb c\u00e1c h\u00ecnh c\u01a1 b\u1ea3n n\u00e0o? A. B. C. C\u00e2u 12. H\u00ecnh n\u00e0o c\u00f3 nhi\u1ec1u h\u00ecnh tr\u00f2n nh\u1ea5t? 89","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 13. H\u00ecnh \u1ea3nh n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi c\u00e2u: \u201cQu\u1ea3 b\u00f3ng \u1edf sau con m\u00e8o\u201d C\u00e2u 14. \u0110\u1ebfm s\u1ed1 h\u00ecnh tr\u00f2n trong h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y. A B C C\u00e2u 15. H\u00ecnh c\u00f3 9 h\u00ecnh ch\u1eef nh\u1eadt l\u00e0: C\u00e2u 16. C\u00e2u n\u00e0o sai khi n\u00f3i v\u1ec1 v\u1ecb tr\u00ed c\u1ee7a chi\u1ebfc gh\u1ebf? A B C 90","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 17. H\u00ecnh \u1ea3nh d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c x\u1ebfp t\u1eeb bao nhi\u00eau kh\u1ed1i l\u1eadp ph\u01b0\u01a1ng? A B C C\u00e2u 18. H\u00ecnh n\u00e0o c\u00f3 10 h\u00ecnh vu\u00f4ng? C\u00e2u 19. C\u00f3 bao nhi\u00eau \u0111\u1ed3 v\u1eadt d\u1ea1ng h\u00ecnh vu\u00f4ng? A B C C\u00e2u 20. \u0110\u1ebfm v\u00e0 cho bi\u1ebft c\u00f3 bao nhi\u00eau h\u00ecnh tr\u00f2n v\u00e0 bao nhi\u00eau h\u00ecnh ch\u1eef nh\u1eadt trong h\u00ecnh sau: A B C 91","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 21. H\u00ecnh n\u00e0o \u0111\u01b0\u1ee3c x\u1ebfp t\u1eeb c\u00e1c h\u00ecnh tam gi\u00e1c? C\u00e2u 22. H\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c x\u1ebfp t\u1eeb c\u00e1c h\u00ecnh n\u00e0o? A B C 92","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 23. H\u00ecnh n\u00e0o c\u00f3 10 h\u00ecnh tam gi\u00e1c v\u00e0 6 h\u00ecnh vu\u00f4ng? C\u00e2u 24. H\u00e3y cho bi\u1ebft v\u1ecb tr\u00ed c\u1ee7a chi\u1ebfc gh\u1ebf so v\u1edbi b\u1ea1n nh\u1ecf trong h\u00ecnh \u1ea3nh sau? A B C C\u00e2u 25. H\u00ecnh \u1ea3nh n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi c\u00e2u: \u201cQu\u1ea3 b\u00f3ng \u1edf tr\u01b0\u1edbc con m\u00e8o\u201d 93","1001 B\u00c0I TO\u00c1N T\u01af DUY \u0110\u00e1p \u00e1n ch\u1ee7 \u0111\u1ec1 6 1B 6B 11C 16B 21A 2A 7B 12C 17A 22C 3C 8A 13A 18D 23C 4A 9D 14A 19A 24B 5D 10C 15B 20B 25B T\u1ea3i App Hoc247 Kids \u0111\u1ec3 xem video h\u01b0\u1edbng d\u1eabn gi\u1ea3i chi ti\u1ebft nh\u00e9! 94","1001 B\u00c0I TO\u00c1N T\u01af DUY CH\u1ee6 \u0110\u1ec0 7 S\u1ed0 V\u00c0 PH\u00c9P C\u1ed8NG TR\u1eea TRONG PH\u1ea0M VI 20 Ki\u1ebfn th\u1ee9c c\u1ea7n nh\u1edb C\u00e1c s\u1ed1 trong ph\u1ea1m vi 20 - C\u00e1c s\u1ed1 trong ph\u1ea1m vi 20 l\u00e0: 0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20. - Ph\u00e9p c\u1ed9ng, ph\u00e9p tr\u1eeb trong ph\u1ea1m vi 20. V\u00ed d\u1ee5: \u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng: B\u00e0i gi\u1ea3i \u0110\u1ed3ng h\u1ed3 M\u1eb7t \u0111\u1ed3ng h\u1ed3 Kim ph\u00fat Kim gi\u1edd 95","1001 B\u00c0I TO\u00c1N T\u01af DUY V\u00ed d\u1ee5 1: Khi kim gi\u1edd ch\u1ec9 v\u00e0o s\u1ed1 7, kim ph\u00fat ch\u1ec9 v\u00e0o s\u1ed1 12, ta \u0111\u01b0\u1ee3c 7 gi\u1edd. V\u00ed d\u1ee5 2: Khi kim gi\u1edd ch\u1ec9 v\u00e0o gi\u1eefa s\u1ed1 7 v\u00e0 s\u1ed1 8, kim ph\u00fat ch\u1ec9 v\u00e0o s\u1ed1 6, ta \u0111\u01b0\u1ee3c 7 gi\u1edd r\u01b0\u1ee1i. \u0110\u1ed3ng h\u1ed3 \u0111i\u1ec7n t\u1eed 96","1001 B\u00c0I TO\u00c1N T\u01af DUY - \u0110\u1ed1i v\u1edbi \u0111\u1ed3ng h\u1ed3 \u0111i\u1ec7n t\u1eed, s\u1ed1 \u1edf b\u00ean tr\u00e1i th\u1ec3 hi\u1ec7n s\u1ed1 gi\u1edd, s\u1ed1 \u1edf b\u00ean ph\u1ea3i th\u1ec3 hi\u1ec7n s\u1ed1 ph\u00fat v\u00e0 ch\u00fang \u0111\u01b0\u1ee3c ng\u0103n c\u00e1ch b\u1edfi d\u1ea5u hai ch\u1ea5m. - V\u00ec 1 ng\u00e0y = 24 gi\u1edd, \u0111\u01b0\u1ee3c tr\u1ea3i d\u00e0i t\u1eeb 0 gi\u1edd \u0111\u1ebfn 23 gi\u1edd 59 ph\u00fat. N\u00ean khi qua 24 gi\u1edd, m\u1ed9t ng\u00e0y m\u1edbi l\u1ea1i b\u1eaft \u0111\u1ea7u. B\u00e0i to\u00e1n so s\u00e1nh V\u00ed d\u1ee5: \u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o c\u1ee7 c\u00e0 r\u1ed1t: B\u00e0i gi\u1ea3i Ta th\u1ea5y: 20 v\u00e0 26 \u0111\u1ec1u g\u1ed3m c\u00f3 2 ch\u1ee5c. \u0110\u1ec3 th\u00ec: 0+ >6 Ta c\u00f3: = 7, 8, 9 T\u00ecm quy lu\u1eadt V\u00ed d\u1ee5: \u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o c\u00e1c \u00f4 tr\u1ed1ng: 97","1001 B\u00c0I TO\u00c1N T\u01af DUY B\u00e0i gi\u1ea3i Ta th\u1ea5y: 2 + 3 = 5 ; 5 + 3 = 8 ; 8 + 3 = 11 ; 11 + 3 = 14 LUY\u1ec6N T\u1eacP C\u00e2u 1. T\u1eeb c\u00e1c s\u1ed1 sau, ta l\u1eadp \u0111\u01b0\u1ee3c c\u00e1c ph\u00e9p tr\u1eeb n\u00e0o? C\u00e2u 2. Hoa \u0111i b\u01a1i trong m\u1ed9t gi\u1edd. Bi\u1ebft b\u1ea1n Hoa \u0111i b\u01a1i v\u1ec1 l\u00fac 9 gi\u1edd. H\u1ecfi b\u1ea1n Hoa b\u1eaft \u0111\u1ea7u \u0111i b\u01a1i l\u00fac m\u1ea5y gi\u1edd? 98","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 3. \u0110\u00e2u l\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u00fang v\u1ec1 c\u1ea5u t\u1ea1o c\u1ee7a s\u1ed1 15? C\u00e2u 4. \u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 ch\u1ea5m: A B C C\u00e2u 5. S\u1ed1 l\u1edbn h\u01a1n 18 v\u00e0 b\u00e9 h\u01a1n 20 l\u00e0: C\u00e2u 6. Ph\u00e9p t\u00ednh n\u00e0o c\u00f3 k\u1ebft qu\u1ea3 l\u00e0 15? 99","1001 B\u00c0I TO\u00c1N T\u01af DUY C\u00e2u 7. \u0110\u1ed3ng h\u1ed3 d\u01b0\u1edbi \u0111\u00e2y ch\u1ec9 m\u1ea5y gi\u1edd? A B C C\u00e2u 8. Khi kim ng\u1eafn ch\u1ec9 s\u1ed1 11 v\u00e0 kim d\u00e0i \u0111ang ch\u1ec9 s\u1ed1 12, th\u00ec \u0111\u1ed3ng h\u1ed3 \u0111\u00f3 \u0111ang ch\u1ec9 m\u1ea5y gi\u1edd? C\u00e2u 9. K\u1ebft qu\u1ea3 c\u1ee7a ph\u00e9p t\u00ednh sau l\u00e0 bao nhi\u00eau? A B C C\u00e2u 10. \u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 ch\u1ea5m: A B C 100"]