四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 96 × 7 = 100 × 7 - __ × 7 | 5 × 8 = 8 × __ |
| 42 × 3 = 3 × __ | 93 + 79 = 79 + __ |
| 37 × 3 = 3 × __ | 11 + 19 = 19 + __ |
| 62 × 3 = 3 × __ | 99 × 4 = (100 - __) × 4 |
| 96 × 6 = 100 × 6 - __ × 6 | (6 + 18) × 9 = 54 + __ |
| 97 × 9 = (100 - __) × 9 | (18 + 5) × 2 = 36 + __ |
| (7 + 2) × 6 = 42 + __ | 54 + 54 = 54 + __ |
| 98 × 3 = (100 - __) × 3 | 33 × 8 = 8 × __ |
| 21 × 9 = 9 × __ | 27 + 93 = 93 + __ |
| 97 × 5 = 100 × 5 - __ × 5 | 30 + 39 + 44 = (30 + __) + 44 |
| 81 × 5 = 5 × __ | 35 + 28 + 41 = (35 + __) + 41 |
| 99 × 8 = 100 × 8 - __ × 8 | 1 + 34 + 24 = (1 + __) + 24 |
| 39 + 41 + 17 = (39 + __) + 17 | 48 + 28 + 25 = (48 + __) + 25 |
| 42 + 22 + 1 = (42 + __) + 1 | 96 × 2 = (100 - __) × 2 |
| 49 + 15 + 48 = (49 + __) + 48 | (19 + 9) × 2 = 38 + __ |
| (4 + 11) × 8 = 32 + __ | (19 + 6) × 5 = 95 + __ |
| 86 + 24 = 24 + __ | 15 + 18 + 50 = (15 + __) + 50 |
| 58 + 28 = 28 + __ | 13 + 70 = 70 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 96 × 7 = 100 × 7 - __ × 7 4 | 5 × 8 = 8 × __ 5 |
| 42 × 3 = 3 × __ 42 | 93 + 79 = 79 + __ 93 |
| 37 × 3 = 3 × __ 37 | 11 + 19 = 19 + __ 11 |
| 62 × 3 = 3 × __ 62 | 99 × 4 = (100 - __) × 4 1 |
| 96 × 6 = 100 × 6 - __ × 6 4 | (6 + 18) × 9 = 54 + __ 162 |
| 97 × 9 = (100 - __) × 9 3 | (18 + 5) × 2 = 36 + __ 10 |
| (7 + 2) × 6 = 42 + __ 12 | 54 + 54 = 54 + __ 54 |
| 98 × 3 = (100 - __) × 3 2 | 33 × 8 = 8 × __ 33 |
| 21 × 9 = 9 × __ 21 | 27 + 93 = 93 + __ 27 |
| 97 × 5 = 100 × 5 - __ × 5 3 | 30 + 39 + 44 = (30 + __) + 44 39 |
| 81 × 5 = 5 × __ 81 | 35 + 28 + 41 = (35 + __) + 41 28 |
| 99 × 8 = 100 × 8 - __ × 8 1 | 1 + 34 + 24 = (1 + __) + 24 34 |
| 39 + 41 + 17 = (39 + __) + 17 41 | 48 + 28 + 25 = (48 + __) + 25 28 |
| 42 + 22 + 1 = (42 + __) + 1 22 | 96 × 2 = (100 - __) × 2 4 |
| 49 + 15 + 48 = (49 + __) + 48 15 | (19 + 9) × 2 = 38 + __ 18 |
| (4 + 11) × 8 = 32 + __ 88 | (19 + 6) × 5 = 95 + __ 30 |
| 86 + 24 = 24 + __ 86 | 15 + 18 + 50 = (15 + __) + 50 18 |
| 58 + 28 = 28 + __ 58 | 13 + 70 = 70 + __ 13 |