四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 53 × 5 = 5 × __ | 32 + 34 + 1 = (32 + __) + 1 |
| 19 + 69 = 69 + __ | 96 × 9 = 100 × 9 - __ × 9 |
| 97 × 2 = 100 × 2 - __ × 2 | 84 + 88 = 88 + __ |
| (2 + 11) × 2 = 4 + __ | 10 + 47 = 47 + __ |
| 16 + 45 + 48 = (16 + __) + 48 | 83 × 9 = 9 × __ |
| (17 + 14) × 2 = 34 + __ | (17 + 15) × 9 = 153 + __ |
| 27 + 48 + 11 = (27 + __) + 11 | (6 + 16) × 4 = 24 + __ |
| 52 + 71 = 71 + __ | 99 × 7 = (100 - __) × 7 |
| (18 + 20) × 2 = 36 + __ | 98 × 2 = 100 × 2 - __ × 2 |
| 54 + 64 = 64 + __ | 80 + 14 = 14 + __ |
| 52 × 7 = 7 × __ | (6 + 17) × 8 = 48 + __ |
| 92 + 82 = 82 + __ | 97 × 3 = 100 × 3 - __ × 3 |
| 99 × 4 = 4 × __ | 22 + 12 + 10 = (22 + __) + 10 |
| 65 × 5 = 5 × __ | (12 + 18) × 7 = 84 + __ |
| (15 + 19) × 7 = 105 + __ | 82 × 6 = 6 × __ |
| 89 × 7 = 7 × __ | 95 × 5 = 100 × 5 - __ × 5 |
| (11 + 19) × 8 = 88 + __ | 96 × 6 = (100 - __) × 6 |
| 17 + 3 + 20 = (17 + __) + 20 | 96 × 7 = 100 × 7 - __ × 7 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 53 × 5 = 5 × __ 53 | 32 + 34 + 1 = (32 + __) + 1 34 |
| 19 + 69 = 69 + __ 19 | 96 × 9 = 100 × 9 - __ × 9 4 |
| 97 × 2 = 100 × 2 - __ × 2 3 | 84 + 88 = 88 + __ 84 |
| (2 + 11) × 2 = 4 + __ 22 | 10 + 47 = 47 + __ 10 |
| 16 + 45 + 48 = (16 + __) + 48 45 | 83 × 9 = 9 × __ 83 |
| (17 + 14) × 2 = 34 + __ 28 | (17 + 15) × 9 = 153 + __ 135 |
| 27 + 48 + 11 = (27 + __) + 11 48 | (6 + 16) × 4 = 24 + __ 64 |
| 52 + 71 = 71 + __ 52 | 99 × 7 = (100 - __) × 7 1 |
| (18 + 20) × 2 = 36 + __ 40 | 98 × 2 = 100 × 2 - __ × 2 2 |
| 54 + 64 = 64 + __ 54 | 80 + 14 = 14 + __ 80 |
| 52 × 7 = 7 × __ 52 | (6 + 17) × 8 = 48 + __ 136 |
| 92 + 82 = 82 + __ 92 | 97 × 3 = 100 × 3 - __ × 3 3 |
| 99 × 4 = 4 × __ 99 | 22 + 12 + 10 = (22 + __) + 10 12 |
| 65 × 5 = 5 × __ 65 | (12 + 18) × 7 = 84 + __ 126 |
| (15 + 19) × 7 = 105 + __ 133 | 82 × 6 = 6 × __ 82 |
| 89 × 7 = 7 × __ 89 | 95 × 5 = 100 × 5 - __ × 5 5 |
| (11 + 19) × 8 = 88 + __ 152 | 96 × 6 = (100 - __) × 6 4 |
| 17 + 3 + 20 = (17 + __) + 20 3 | 96 × 7 = 100 × 7 - __ × 7 4 |