四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 39 + 46 + 32 = (39 + __) + 32 | 16 + 35 + 49 = (16 + __) + 49 |
| 98 × 9 = (100 - __) × 9 | (1 + 9) × 7 = 7 + __ |
| 75 × 6 = 6 × __ | 71 + 56 = 56 + __ |
| (11 + 20) × 9 = 99 + __ | (12 + 2) × 7 = 84 + __ |
| 39 × 3 = 3 × __ | 69 × 8 = 8 × __ |
| 5 + 4 + 43 = (5 + __) + 43 | 56 + 14 = 14 + __ |
| 76 + 61 = 61 + __ | 7 + 7 + 31 = (7 + __) + 31 |
| 6 + 1 + 48 = (6 + __) + 48 | 53 × 4 = 4 × __ |
| 42 + 73 = 73 + __ | 99 × 4 = 100 × 4 - __ × 4 |
| 97 × 2 = 100 × 2 - __ × 2 | 73 + 41 = 41 + __ |
| 10 × 7 = 7 × __ | 95 × 9 = 100 × 9 - __ × 9 |
| 34 + 17 + 28 = (34 + __) + 28 | 36 × 9 = 9 × __ |
| 25 + 56 = 56 + __ | 66 + 60 = 60 + __ |
| 8 × 5 = 5 × __ | 98 × 7 = 100 × 7 - __ × 7 |
| (7 + 18) × 6 = 42 + __ | 95 × 3 = 100 × 3 - __ × 3 |
| 95 × 6 = (100 - __) × 6 | 33 + 3 + 6 = (33 + __) + 6 |
| 46 × 7 = 7 × __ | (5 + 13) × 2 = 10 + __ |
| 29 × 6 = 6 × __ | 96 × 7 = (100 - __) × 7 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 39 + 46 + 32 = (39 + __) + 32 46 | 16 + 35 + 49 = (16 + __) + 49 35 |
| 98 × 9 = (100 - __) × 9 2 | (1 + 9) × 7 = 7 + __ 63 |
| 75 × 6 = 6 × __ 75 | 71 + 56 = 56 + __ 71 |
| (11 + 20) × 9 = 99 + __ 180 | (12 + 2) × 7 = 84 + __ 14 |
| 39 × 3 = 3 × __ 39 | 69 × 8 = 8 × __ 69 |
| 5 + 4 + 43 = (5 + __) + 43 4 | 56 + 14 = 14 + __ 56 |
| 76 + 61 = 61 + __ 76 | 7 + 7 + 31 = (7 + __) + 31 7 |
| 6 + 1 + 48 = (6 + __) + 48 1 | 53 × 4 = 4 × __ 53 |
| 42 + 73 = 73 + __ 42 | 99 × 4 = 100 × 4 - __ × 4 1 |
| 97 × 2 = 100 × 2 - __ × 2 3 | 73 + 41 = 41 + __ 73 |
| 10 × 7 = 7 × __ 10 | 95 × 9 = 100 × 9 - __ × 9 5 |
| 34 + 17 + 28 = (34 + __) + 28 17 | 36 × 9 = 9 × __ 36 |
| 25 + 56 = 56 + __ 25 | 66 + 60 = 60 + __ 66 |
| 8 × 5 = 5 × __ 8 | 98 × 7 = 100 × 7 - __ × 7 2 |
| (7 + 18) × 6 = 42 + __ 108 | 95 × 3 = 100 × 3 - __ × 3 5 |
| 95 × 6 = (100 - __) × 6 5 | 33 + 3 + 6 = (33 + __) + 6 3 |
| 46 × 7 = 7 × __ 46 | (5 + 13) × 2 = 10 + __ 26 |
| 29 × 6 = 6 × __ 29 | 96 × 7 = (100 - __) × 7 4 |