四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 33 + 28 + 22 = (33 + __) + 22 | 97 × 2 = (100 - __) × 2 |
| (18 + 1) × 6 = 108 + __ | 40 + 3 + 27 = (40 + __) + 27 |
| 89 × 9 = 9 × __ | 18 + 94 = 94 + __ |
| (19 + 2) × 3 = 57 + __ | 44 × 3 = 3 × __ |
| (9 + 9) × 7 = 63 + __ | 39 × 3 = 3 × __ |
| 11 + 24 + 10 = (11 + __) + 10 | 43 + 21 + 28 = (43 + __) + 28 |
| 37 + 23 + 46 = (37 + __) + 46 | 64 + 58 = 58 + __ |
| 24 × 4 = 4 × __ | 95 × 5 = (100 - __) × 5 |
| 47 + 37 = 37 + __ | (10 + 13) × 7 = 70 + __ |
| 46 + 40 = 40 + __ | 33 + 29 + 23 = (33 + __) + 23 |
| 8 + 34 + 28 = (8 + __) + 28 | (1 + 4) × 3 = 3 + __ |
| 99 × 5 = (100 - __) × 5 | 98 × 2 = 100 × 2 - __ × 2 |
| (14 + 12) × 3 = 42 + __ | 26 × 8 = 8 × __ |
| 16 + 80 = 80 + __ | 42 × 5 = 5 × __ |
| 27 + 28 = 28 + __ | 96 × 6 = (100 - __) × 6 |
| 32 + 17 + 11 = (32 + __) + 11 | 96 × 2 = (100 - __) × 2 |
| (15 + 4) × 2 = 30 + __ | 96 × 7 = 100 × 7 - __ × 7 |
| 31 × 6 = 6 × __ | 25 + 67 = 67 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 33 + 28 + 22 = (33 + __) + 22 28 | 97 × 2 = (100 - __) × 2 3 |
| (18 + 1) × 6 = 108 + __ 6 | 40 + 3 + 27 = (40 + __) + 27 3 |
| 89 × 9 = 9 × __ 89 | 18 + 94 = 94 + __ 18 |
| (19 + 2) × 3 = 57 + __ 6 | 44 × 3 = 3 × __ 44 |
| (9 + 9) × 7 = 63 + __ 63 | 39 × 3 = 3 × __ 39 |
| 11 + 24 + 10 = (11 + __) + 10 24 | 43 + 21 + 28 = (43 + __) + 28 21 |
| 37 + 23 + 46 = (37 + __) + 46 23 | 64 + 58 = 58 + __ 64 |
| 24 × 4 = 4 × __ 24 | 95 × 5 = (100 - __) × 5 5 |
| 47 + 37 = 37 + __ 47 | (10 + 13) × 7 = 70 + __ 91 |
| 46 + 40 = 40 + __ 46 | 33 + 29 + 23 = (33 + __) + 23 29 |
| 8 + 34 + 28 = (8 + __) + 28 34 | (1 + 4) × 3 = 3 + __ 12 |
| 99 × 5 = (100 - __) × 5 1 | 98 × 2 = 100 × 2 - __ × 2 2 |
| (14 + 12) × 3 = 42 + __ 36 | 26 × 8 = 8 × __ 26 |
| 16 + 80 = 80 + __ 16 | 42 × 5 = 5 × __ 42 |
| 27 + 28 = 28 + __ 27 | 96 × 6 = (100 - __) × 6 4 |
| 32 + 17 + 11 = (32 + __) + 11 17 | 96 × 2 = (100 - __) × 2 4 |
| (15 + 4) × 2 = 30 + __ 8 | 96 × 7 = 100 × 7 - __ × 7 4 |
| 31 × 6 = 6 × __ 31 | 25 + 67 = 67 + __ 25 |