四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 97 × 4 = 100 × 4 - __ × 4 | 91 + 66 = 66 + __ |
| (16 + 17) × 7 = 112 + __ | 95 × 3 = (100 - __) × 3 |
| (5 + 20) × 8 = 40 + __ | 71 × 4 = 4 × __ |
| (18 + 15) × 3 = 54 + __ | 61 + 48 = 48 + __ |
| 87 × 3 = 3 × __ | 95 × 9 = (100 - __) × 9 |
| 99 × 9 = 100 × 9 - __ × 9 | 99 + 49 = 49 + __ |
| 95 × 5 = (100 - __) × 5 | (12 + 16) × 4 = 48 + __ |
| 99 × 4 = 100 × 4 - __ × 4 | 15 × 7 = 7 × __ |
| 83 × 7 = 7 × __ | 68 × 3 = 3 × __ |
| 52 × 8 = 8 × __ | 82 + 84 = 84 + __ |
| (18 + 11) × 9 = 162 + __ | 42 + 49 + 29 = (42 + __) + 29 |
| 20 + 51 = 51 + __ | 96 × 6 = (100 - __) × 6 |
| 27 + 76 = 76 + __ | 99 × 3 = 100 × 3 - __ × 3 |
| 35 + 26 + 37 = (35 + __) + 37 | 47 + 25 + 1 = (47 + __) + 1 |
| 22 × 9 = 9 × __ | 12 + 36 + 39 = (12 + __) + 39 |
| 37 + 23 + 1 = (37 + __) + 1 | 45 + 64 = 64 + __ |
| 35 + 43 = 43 + __ | 95 × 5 = (100 - __) × 5 |
| 11 + 76 = 76 + __ | 49 + 44 + 6 = (49 + __) + 6 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 97 × 4 = 100 × 4 - __ × 4 3 | 91 + 66 = 66 + __ 91 |
| (16 + 17) × 7 = 112 + __ 119 | 95 × 3 = (100 - __) × 3 5 |
| (5 + 20) × 8 = 40 + __ 160 | 71 × 4 = 4 × __ 71 |
| (18 + 15) × 3 = 54 + __ 45 | 61 + 48 = 48 + __ 61 |
| 87 × 3 = 3 × __ 87 | 95 × 9 = (100 - __) × 9 5 |
| 99 × 9 = 100 × 9 - __ × 9 1 | 99 + 49 = 49 + __ 99 |
| 95 × 5 = (100 - __) × 5 5 | (12 + 16) × 4 = 48 + __ 64 |
| 99 × 4 = 100 × 4 - __ × 4 1 | 15 × 7 = 7 × __ 15 |
| 83 × 7 = 7 × __ 83 | 68 × 3 = 3 × __ 68 |
| 52 × 8 = 8 × __ 52 | 82 + 84 = 84 + __ 82 |
| (18 + 11) × 9 = 162 + __ 99 | 42 + 49 + 29 = (42 + __) + 29 49 |
| 20 + 51 = 51 + __ 20 | 96 × 6 = (100 - __) × 6 4 |
| 27 + 76 = 76 + __ 27 | 99 × 3 = 100 × 3 - __ × 3 1 |
| 35 + 26 + 37 = (35 + __) + 37 26 | 47 + 25 + 1 = (47 + __) + 1 25 |
| 22 × 9 = 9 × __ 22 | 12 + 36 + 39 = (12 + __) + 39 36 |
| 37 + 23 + 1 = (37 + __) + 1 23 | 45 + 64 = 64 + __ 45 |
| 35 + 43 = 43 + __ 35 | 95 × 5 = (100 - __) × 5 5 |
| 11 + 76 = 76 + __ 11 | 49 + 44 + 6 = (49 + __) + 6 44 |