四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 75 + 52 = 52 + __ | (7 + 14) × 8 = 56 + __ |
| 39 + 4 + 44 = (39 + __) + 44 | 14 + 64 = 64 + __ |
| 3 + 28 + 34 = (3 + __) + 34 | 96 × 4 = 100 × 4 - __ × 4 |
| 17 + 16 = 16 + __ | 37 + 32 + 16 = (37 + __) + 16 |
| 41 + 24 = 24 + __ | 97 × 9 = 100 × 9 - __ × 9 |
| 6 × 5 = 5 × __ | 96 × 9 = 100 × 9 - __ × 9 |
| (12 + 1) × 3 = 36 + __ | 38 + 60 = 60 + __ |
| 4 + 40 + 39 = (4 + __) + 39 | (8 + 14) × 8 = 64 + __ |
| 97 × 9 = (100 - __) × 9 | 33 × 6 = 6 × __ |
| 50 × 3 = 3 × __ | 22 × 7 = 7 × __ |
| 91 × 3 = 3 × __ | 16 + 89 = 89 + __ |
| 97 × 3 = 100 × 3 - __ × 3 | 93 × 3 = 3 × __ |
| 95 × 7 = 100 × 7 - __ × 7 | (10 + 18) × 3 = 30 + __ |
| 31 + 44 + 9 = (31 + __) + 9 | 97 × 9 = 100 × 9 - __ × 9 |
| 97 + 67 = 67 + __ | 37 + 30 + 11 = (37 + __) + 11 |
| (3 + 4) × 8 = 24 + __ | 86 + 41 = 41 + __ |
| (20 + 12) × 3 = 60 + __ | (14 + 20) × 7 = 98 + __ |
| 98 × 9 = (100 - __) × 9 | 61 × 5 = 5 × __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 75 + 52 = 52 + __ 75 | (7 + 14) × 8 = 56 + __ 112 |
| 39 + 4 + 44 = (39 + __) + 44 4 | 14 + 64 = 64 + __ 14 |
| 3 + 28 + 34 = (3 + __) + 34 28 | 96 × 4 = 100 × 4 - __ × 4 4 |
| 17 + 16 = 16 + __ 17 | 37 + 32 + 16 = (37 + __) + 16 32 |
| 41 + 24 = 24 + __ 41 | 97 × 9 = 100 × 9 - __ × 9 3 |
| 6 × 5 = 5 × __ 6 | 96 × 9 = 100 × 9 - __ × 9 4 |
| (12 + 1) × 3 = 36 + __ 3 | 38 + 60 = 60 + __ 38 |
| 4 + 40 + 39 = (4 + __) + 39 40 | (8 + 14) × 8 = 64 + __ 112 |
| 97 × 9 = (100 - __) × 9 3 | 33 × 6 = 6 × __ 33 |
| 50 × 3 = 3 × __ 50 | 22 × 7 = 7 × __ 22 |
| 91 × 3 = 3 × __ 91 | 16 + 89 = 89 + __ 16 |
| 97 × 3 = 100 × 3 - __ × 3 3 | 93 × 3 = 3 × __ 93 |
| 95 × 7 = 100 × 7 - __ × 7 5 | (10 + 18) × 3 = 30 + __ 54 |
| 31 + 44 + 9 = (31 + __) + 9 44 | 97 × 9 = 100 × 9 - __ × 9 3 |
| 97 + 67 = 67 + __ 97 | 37 + 30 + 11 = (37 + __) + 11 30 |
| (3 + 4) × 8 = 24 + __ 32 | 86 + 41 = 41 + __ 86 |
| (20 + 12) × 3 = 60 + __ 36 | (14 + 20) × 7 = 98 + __ 140 |
| 98 × 9 = (100 - __) × 9 2 | 61 × 5 = 5 × __ 61 |