四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 87 × 3 = 3 × __ | 91 × 3 = 3 × __ |
| 86 + 25 = 25 + __ | 97 × 8 = (100 - __) × 8 |
| 94 + 69 = 69 + __ | (11 + 20) × 8 = 88 + __ |
| 39 + 49 + 35 = (39 + __) + 35 | 96 × 7 = (100 - __) × 7 |
| 88 × 8 = 8 × __ | 56 + 44 = 44 + __ |
| 1 + 18 + 31 = (1 + __) + 31 | 98 × 2 = (100 - __) × 2 |
| 99 × 8 = 100 × 8 - __ × 8 | 29 + 47 = 47 + __ |
| (10 + 11) × 5 = 50 + __ | 99 × 2 = (100 - __) × 2 |
| 34 + 31 + 7 = (34 + __) + 7 | 99 × 6 = 100 × 6 - __ × 6 |
| 47 + 32 = 32 + __ | (13 + 15) × 4 = 52 + __ |
| 86 + 21 = 21 + __ | 11 + 50 = 50 + __ |
| 95 × 9 = (100 - __) × 9 | 96 × 6 = (100 - __) × 6 |
| 24 + 37 + 24 = (24 + __) + 24 | 87 + 42 = 42 + __ |
| 59 + 17 = 17 + __ | 72 × 8 = 8 × __ |
| (1 + 2) × 5 = 5 + __ | 37 + 23 + 42 = (37 + __) + 42 |
| 50 + 4 + 8 = (50 + __) + 8 | 98 × 2 = (100 - __) × 2 |
| 11 × 2 = 2 × __ | (3 + 14) × 3 = 9 + __ |
| 49 + 46 + 48 = (49 + __) + 48 | 9 + 17 + 13 = (9 + __) + 13 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 87 × 3 = 3 × __ 87 | 91 × 3 = 3 × __ 91 |
| 86 + 25 = 25 + __ 86 | 97 × 8 = (100 - __) × 8 3 |
| 94 + 69 = 69 + __ 94 | (11 + 20) × 8 = 88 + __ 160 |
| 39 + 49 + 35 = (39 + __) + 35 49 | 96 × 7 = (100 - __) × 7 4 |
| 88 × 8 = 8 × __ 88 | 56 + 44 = 44 + __ 56 |
| 1 + 18 + 31 = (1 + __) + 31 18 | 98 × 2 = (100 - __) × 2 2 |
| 99 × 8 = 100 × 8 - __ × 8 1 | 29 + 47 = 47 + __ 29 |
| (10 + 11) × 5 = 50 + __ 55 | 99 × 2 = (100 - __) × 2 1 |
| 34 + 31 + 7 = (34 + __) + 7 31 | 99 × 6 = 100 × 6 - __ × 6 1 |
| 47 + 32 = 32 + __ 47 | (13 + 15) × 4 = 52 + __ 60 |
| 86 + 21 = 21 + __ 86 | 11 + 50 = 50 + __ 11 |
| 95 × 9 = (100 - __) × 9 5 | 96 × 6 = (100 - __) × 6 4 |
| 24 + 37 + 24 = (24 + __) + 24 37 | 87 + 42 = 42 + __ 87 |
| 59 + 17 = 17 + __ 59 | 72 × 8 = 8 × __ 72 |
| (1 + 2) × 5 = 5 + __ 10 | 37 + 23 + 42 = (37 + __) + 42 23 |
| 50 + 4 + 8 = (50 + __) + 8 4 | 98 × 2 = (100 - __) × 2 2 |
| 11 × 2 = 2 × __ 11 | (3 + 14) × 3 = 9 + __ 42 |
| 49 + 46 + 48 = (49 + __) + 48 46 | 9 + 17 + 13 = (9 + __) + 13 17 |