四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 53 + 67 = 67 + __ | (10 + 19) × 7 = 70 + __ |
| 9 × 5 = 5 × __ | 98 × 9 = (100 - __) × 9 |
| 22 + 24 + 40 = (22 + __) + 40 | 85 × 3 = 3 × __ |
| 91 × 4 = 4 × __ | (4 + 17) × 7 = 28 + __ |
| 70 × 6 = 6 × __ | 99 × 9 = (100 - __) × 9 |
| 99 × 8 = 100 × 8 - __ × 8 | 36 + 15 + 20 = (36 + __) + 20 |
| (1 + 16) × 9 = 9 + __ | (17 + 1) × 5 = 85 + __ |
| 37 × 7 = 7 × __ | 99 × 4 = 100 × 4 - __ × 4 |
| 60 + 69 = 69 + __ | (17 + 13) × 4 = 68 + __ |
| 69 + 49 = 49 + __ | 20 × 7 = 7 × __ |
| 32 + 27 + 39 = (32 + __) + 39 | 91 × 6 = 6 × __ |
| (20 + 1) × 7 = 140 + __ | 12 + 86 = 86 + __ |
| (14 + 4) × 6 = 84 + __ | (11 + 13) × 9 = 99 + __ |
| 22 + 43 + 32 = (22 + __) + 32 | 20 + 20 + 49 = (20 + __) + 49 |
| (2 + 17) × 5 = 10 + __ | 99 × 4 = 100 × 4 - __ × 4 |
| 97 × 4 = (100 - __) × 4 | 95 × 3 = 100 × 3 - __ × 3 |
| 21 + 40 + 23 = (21 + __) + 23 | 89 × 2 = 2 × __ |
| 97 × 4 = (100 - __) × 4 | (12 + 8) × 9 = 108 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 53 + 67 = 67 + __ 53 | (10 + 19) × 7 = 70 + __ 133 |
| 9 × 5 = 5 × __ 9 | 98 × 9 = (100 - __) × 9 2 |
| 22 + 24 + 40 = (22 + __) + 40 24 | 85 × 3 = 3 × __ 85 |
| 91 × 4 = 4 × __ 91 | (4 + 17) × 7 = 28 + __ 119 |
| 70 × 6 = 6 × __ 70 | 99 × 9 = (100 - __) × 9 1 |
| 99 × 8 = 100 × 8 - __ × 8 1 | 36 + 15 + 20 = (36 + __) + 20 15 |
| (1 + 16) × 9 = 9 + __ 144 | (17 + 1) × 5 = 85 + __ 5 |
| 37 × 7 = 7 × __ 37 | 99 × 4 = 100 × 4 - __ × 4 1 |
| 60 + 69 = 69 + __ 60 | (17 + 13) × 4 = 68 + __ 52 |
| 69 + 49 = 49 + __ 69 | 20 × 7 = 7 × __ 20 |
| 32 + 27 + 39 = (32 + __) + 39 27 | 91 × 6 = 6 × __ 91 |
| (20 + 1) × 7 = 140 + __ 7 | 12 + 86 = 86 + __ 12 |
| (14 + 4) × 6 = 84 + __ 24 | (11 + 13) × 9 = 99 + __ 117 |
| 22 + 43 + 32 = (22 + __) + 32 43 | 20 + 20 + 49 = (20 + __) + 49 20 |
| (2 + 17) × 5 = 10 + __ 85 | 99 × 4 = 100 × 4 - __ × 4 1 |
| 97 × 4 = (100 - __) × 4 3 | 95 × 3 = 100 × 3 - __ × 3 5 |
| 21 + 40 + 23 = (21 + __) + 23 40 | 89 × 2 = 2 × __ 89 |
| 97 × 4 = (100 - __) × 4 3 | (12 + 8) × 9 = 108 + __ 72 |