Логические примеры по математике для 2 класса. Сложение и вычитание в пределах 100.
1.
| 1 1 1 1 1 = 21 |
2 2 2 2 2 2 2 2 2 = 32 |
1 1 1 1 1 = 23 |
| 2 2 2 2 2 2 2 2 2 = 28 |
2 2 2 = 24 |
2 2 2 2 2 2 2 2 2 = 24 |
| 2 2 2 = 2О |
2 2 2 2 2 2 2 2 2 = 2О |
2 2 2 2 = 26 |
Решение:
| 11 + 11 - 1 = 21 |
22 + 2 + 2 + 2 + 2 + 2 + 2 - 2 = 32 |
11 + 11 + 1 = 23 |
| 22 + 2 + 2 + 2 + 2 + 2 - 2 - 2 = 28 |
22 + 2 = 24 |
22 + 2 + 2 + 2 + 2 - 2 - 2 - 2 = 24 |
| 22 - 2 = 2О |
22 + 2 + 2 + 2 - 2 - 2 - 2 - 2 = 2О |
22 + 2 + 2 = 26 |
2.
| 2 2 2 2 2 2 2 2 2 = 16 |
2 2 2 2 = 22 |
2 2 2 2 2 2 2 2 2 = 12 |
| 2 2 2 2 = 18 |
2 2 2 2 2 2 2 2 2 = 8 |
2 2 2 2 2 = 28 |
| 2 2 2 2 2 2 2 2 2 = 38 |
2 2 2 2 2 = 24 |
2 2 2 2 2 2 2 2 2 = З4 |
Решение:
| 22 + 2 + 2 - 2 - 2 - 2 - 2 - 2 = 16 |
22 + 2 - 2 = 22 |
22 + 2 - 2 - 2 - 2 - 2 - 2 - 2 = 12 |
| 22 - 2 - 2 = 18 |
22 - 2 - 2 - 2 - 2 - 2 - 2 - 2 = 8 |
22 + 2 + 2 + 2 = 28 |
| 22 + 22 + 2 - 2 - 2 - 2 - 2 = 38 |
22 + 2 + 2 - 2 = 24 |
22 + 22 - 2 - 2 - 2 - 2 - 2 = З4 |
3.
| 2 2 2 2 2 = 2О |
3 3 3 = 36 |
2 2 2 2 2 = 16 |
| 3 3 3 = 30 |
2 2 2 2 2 2 = 30 |
3 3 3 3 = 33 |
| 2 2 2 2 2 2 = 26 |
3 3 3 3 = 27 |
2 2 2 2 2 2 = 22 |
Решение:
| 22 + 2 - 2 - 2 = 2О |
33 + 3 = 36 |
22 - 2 - 2 - 2 = 16 |
| 33 - 3 = 30 |
22 + 2 + 2 + 2 + 2 = 30 |
33 + 3 - 3 = 33 |
| 22 + 2 + 2 + 2 - 2 = 26 |
33 - 3 - 3 = 27 |
22 + 2 + 2 - 2 - 2 = 22 |
4.
| 3 3 3 3 3 = 30 |
2 2 2 2 2 2 = 18 |
3 3 3 3 3 = 24 |
| 2 2 2 2 2 2 = 14 |
3 3 3 3 3 3 = 33 |
2 2 2 2 2 2 = 44 |
| 3 3 3 3 3 3 = 27 |
2 2 2 2 2 2= 4О |
3 3 3 3 3 3 = 21 |
Решение:
| 33 + 3 - 3 - 3 = 30 |
22 + 2 - 2 - 2 - 2 = 18 |
33 - 3 - 3 - 3 = 24 |
| 22 - 2 - 2 - 2 - 2 = 14 |
33 + 3 + 3 - 3 - 3 = 33 |
22 + 22 + 2 - 2 = 44 |
| 33 + 3 - 3 - 3 - 3 = 27 |
22 + 22 - 2 - 2 = 4О |
33 - 3 - 3 - 3 - 3 = 21 |
5.
| 2 2 2 2 2 2 2 = 32 |
3 3 3 3 3 3 3 = 21 |
2 2 2 2 2 2 2 = 28 |
| 3 3 3 3 3 3 3 = 36 |
2 2 2 2 2 2 2 = 24 |
3 3 3 3 3 3 3 = 30 |
| 2 2 2 2 2 2 2 2= 20 |
3 3 3 3 3 3 3 3 = 24 |
2 2 2 2 2 2 2 = 16 |
Решение:
| 22 + 2 + 2 + 2 + 2 + 2 = 32 |
3 + 3 + 3 + 3 + 3 + 3 + 3 = 21 |
22 + 2 + 2 + 2 + 2 - 2 = 28 |
| 33 + 3 + 3 + 3 - 3 - 3 = 36 |
22 + 2 + 2 + 2 - 2 - 2 = 24 |
33 + 3 + 3 - 3 - 3 - 3 = 30 |
| 22 + 2 + 2 + 2 - 2 - 2 - 2 = 20 |
3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 = 24 |
2 + 2 + 2 + 2 + 2 + 2 + 2 = 16 |
6.
| 3 3 3 3 3 3 3 3 = 33 |
2 2 2 2 2 2 2 = 12 |
3 3 3 3 3 3 3 3 = 27 |
| 2 2 2 2 2 2 2 = 38 |
3 3 3 3 3 3 3 3 = 21 |
2 2 2 2 2 2 2 2 = 26 |
| 3 3 3 3 3 3 3 3 = 15 |
2 2 2 2 2 2 2 2 = 22 |
3 3 3 3 3 3 3 3 3 = 27 |
Решение:
| 33 + 3 + 3 + 3 - 3 - 3 - 3 = 33 |
22 - 2 - 2 - 2 - 2 - 2 = 12 |
33 + 3 + 3 - 3 - 3 - 3 - 3 = 27 |
| 22 + 22 - 2 - 2 - 2 = 38 |
33 + 3 - 3 - 3 - 3 - 3 - 3 = 21 |
22 + 2 + 2 + 2 + 2 - 2 - 2 = 26 |
| 33 - 3 - 3 - 3 - 3 - 3 - 3 = 15 |
22 + 2 + 2 + 2 - 2 - 2 - 2 = 22 |
3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 = 27 |
На странице использованы материалы из книги О.В. Узоровой и Е.А. Нефедовой «3000 логических примеров по математике».