四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 85 + 96 = 96 + __ | (13 + 1) × 3 = 39 + __ |
| (10 + 20) × 9 = 90 + __ | (16 + 16) × 3 = 48 + __ |
| 96 × 6 = 100 × 6 - __ × 6 | 30 × 4 = 4 × __ |
| (3 + 15) × 5 = 15 + __ | 55 × 5 = 5 × __ |
| 66 + 74 = 74 + __ | (12 + 11) × 3 = 36 + __ |
| 43 + 28 + 29 = (43 + __) + 29 | 75 + 72 = 72 + __ |
| 98 × 8 = 8 × __ | (20 + 11) × 2 = 40 + __ |
| 34 + 12 = 12 + __ | 5 + 28 + 9 = (5 + __) + 9 |
| 28 + 31 = 31 + __ | (1 + 14) × 8 = 8 + __ |
| 89 × 5 = 5 × __ | 95 × 6 = 100 × 6 - __ × 6 |
| 83 + 94 = 94 + __ | 99 × 5 = (100 - __) × 5 |
| 97 × 8 = (100 - __) × 8 | 97 × 7 = 100 × 7 - __ × 7 |
| 62 × 5 = 5 × __ | 97 × 4 = (100 - __) × 4 |
| 10 + 7 + 17 = (10 + __) + 17 | 96 × 3 = (100 - __) × 3 |
| 2 + 23 + 39 = (2 + __) + 39 | 27 + 47 + 10 = (27 + __) + 10 |
| 52 + 99 = 99 + __ | 84 + 20 = 20 + __ |
| 35 + 2 + 24 = (35 + __) + 24 | 96 × 6 = (100 - __) × 6 |
| 30 × 2 = 2 × __ | 16 + 12 + 12 = (16 + __) + 12 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 85 + 96 = 96 + __ 85 | (13 + 1) × 3 = 39 + __ 3 |
| (10 + 20) × 9 = 90 + __ 180 | (16 + 16) × 3 = 48 + __ 48 |
| 96 × 6 = 100 × 6 - __ × 6 4 | 30 × 4 = 4 × __ 30 |
| (3 + 15) × 5 = 15 + __ 75 | 55 × 5 = 5 × __ 55 |
| 66 + 74 = 74 + __ 66 | (12 + 11) × 3 = 36 + __ 33 |
| 43 + 28 + 29 = (43 + __) + 29 28 | 75 + 72 = 72 + __ 75 |
| 98 × 8 = 8 × __ 98 | (20 + 11) × 2 = 40 + __ 22 |
| 34 + 12 = 12 + __ 34 | 5 + 28 + 9 = (5 + __) + 9 28 |
| 28 + 31 = 31 + __ 28 | (1 + 14) × 8 = 8 + __ 112 |
| 89 × 5 = 5 × __ 89 | 95 × 6 = 100 × 6 - __ × 6 5 |
| 83 + 94 = 94 + __ 83 | 99 × 5 = (100 - __) × 5 1 |
| 97 × 8 = (100 - __) × 8 3 | 97 × 7 = 100 × 7 - __ × 7 3 |
| 62 × 5 = 5 × __ 62 | 97 × 4 = (100 - __) × 4 3 |
| 10 + 7 + 17 = (10 + __) + 17 7 | 96 × 3 = (100 - __) × 3 4 |
| 2 + 23 + 39 = (2 + __) + 39 23 | 27 + 47 + 10 = (27 + __) + 10 47 |
| 52 + 99 = 99 + __ 52 | 84 + 20 = 20 + __ 84 |
| 35 + 2 + 24 = (35 + __) + 24 2 | 96 × 6 = (100 - __) × 6 4 |
| 30 × 2 = 2 × __ 30 | 16 + 12 + 12 = (16 + __) + 12 12 |