四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 95 × 9 = 9 × __ | 34 + 27 = 27 + __ |
| 63 + 33 = 33 + __ | 37 + 39 + 20 = (37 + __) + 20 |
| 40 × 7 = 7 × __ | 44 + 10 + 41 = (44 + __) + 41 |
| 89 × 5 = 5 × __ | 99 × 2 = 100 × 2 - __ × 2 |
| 79 × 5 = 5 × __ | 37 + 37 = 37 + __ |
| 99 × 3 = (100 - __) × 3 | 4 + 29 + 10 = (4 + __) + 10 |
| 96 × 2 = 100 × 2 - __ × 2 | 99 × 7 = 100 × 7 - __ × 7 |
| 58 × 3 = 3 × __ | 95 × 7 = (100 - __) × 7 |
| 95 × 4 = 100 × 4 - __ × 4 | (12 + 11) × 7 = 84 + __ |
| 98 × 6 = (100 - __) × 6 | 12 + 40 + 24 = (12 + __) + 24 |
| 36 + 53 = 53 + __ | (4 + 20) × 5 = 20 + __ |
| (14 + 19) × 2 = 28 + __ | 22 × 7 = 7 × __ |
| 4 × 4 = 4 × __ | 13 + 88 = 88 + __ |
| (10 + 6) × 3 = 30 + __ | 96 × 5 = 100 × 5 - __ × 5 |
| 39 + 69 = 69 + __ | 15 + 48 + 15 = (15 + __) + 15 |
| 11 + 24 + 6 = (11 + __) + 6 | (9 + 19) × 9 = 81 + __ |
| 86 + 35 = 35 + __ | 76 + 41 = 41 + __ |
| 32 + 6 + 44 = (32 + __) + 44 | (7 + 11) × 5 = 35 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 95 × 9 = 9 × __ 95 | 34 + 27 = 27 + __ 34 |
| 63 + 33 = 33 + __ 63 | 37 + 39 + 20 = (37 + __) + 20 39 |
| 40 × 7 = 7 × __ 40 | 44 + 10 + 41 = (44 + __) + 41 10 |
| 89 × 5 = 5 × __ 89 | 99 × 2 = 100 × 2 - __ × 2 1 |
| 79 × 5 = 5 × __ 79 | 37 + 37 = 37 + __ 37 |
| 99 × 3 = (100 - __) × 3 1 | 4 + 29 + 10 = (4 + __) + 10 29 |
| 96 × 2 = 100 × 2 - __ × 2 4 | 99 × 7 = 100 × 7 - __ × 7 1 |
| 58 × 3 = 3 × __ 58 | 95 × 7 = (100 - __) × 7 5 |
| 95 × 4 = 100 × 4 - __ × 4 5 | (12 + 11) × 7 = 84 + __ 77 |
| 98 × 6 = (100 - __) × 6 2 | 12 + 40 + 24 = (12 + __) + 24 40 |
| 36 + 53 = 53 + __ 36 | (4 + 20) × 5 = 20 + __ 100 |
| (14 + 19) × 2 = 28 + __ 38 | 22 × 7 = 7 × __ 22 |
| 4 × 4 = 4 × __ 4 | 13 + 88 = 88 + __ 13 |
| (10 + 6) × 3 = 30 + __ 18 | 96 × 5 = 100 × 5 - __ × 5 4 |
| 39 + 69 = 69 + __ 39 | 15 + 48 + 15 = (15 + __) + 15 48 |
| 11 + 24 + 6 = (11 + __) + 6 24 | (9 + 19) × 9 = 81 + __ 171 |
| 86 + 35 = 35 + __ 86 | 76 + 41 = 41 + __ 76 |
| 32 + 6 + 44 = (32 + __) + 44 6 | (7 + 11) × 5 = 35 + __ 55 |