四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 76 × 9 = 9 × __ | (18 + 7) × 3 = 54 + __ |
| 59 + 88 = 88 + __ | 96 × 9 = 100 × 9 - __ × 9 |
| 99 × 2 = 2 × __ | 99 × 5 = (100 - __) × 5 |
| 11 × 7 = 7 × __ | (20 + 17) × 5 = 100 + __ |
| 50 + 22 + 31 = (50 + __) + 31 | (1 + 2) × 4 = 4 + __ |
| 78 × 7 = 7 × __ | 94 × 7 = 7 × __ |
| 40 + 34 + 33 = (40 + __) + 33 | 97 × 5 = 100 × 5 - __ × 5 |
| 20 + 60 = 60 + __ | 2 + 44 + 2 = (2 + __) + 2 |
| 98 × 2 = (100 - __) × 2 | 95 × 6 = 100 × 6 - __ × 6 |
| (6 + 2) × 7 = 42 + __ | 47 + 22 = 22 + __ |
| (14 + 20) × 2 = 28 + __ | (17 + 16) × 7 = 119 + __ |
| 18 × 2 = 2 × __ | 3 + 29 + 34 = (3 + __) + 34 |
| 37 + 42 + 43 = (37 + __) + 43 | 13 × 7 = 7 × __ |
| 20 + 15 + 20 = (20 + __) + 20 | 64 + 77 = 77 + __ |
| 97 + 44 = 44 + __ | 25 × 2 = 2 × __ |
| 18 × 8 = 8 × __ | (20 + 3) × 9 = 180 + __ |
| (6 + 17) × 8 = 48 + __ | 81 × 3 = 3 × __ |
| (7 + 4) × 5 = 35 + __ | 96 × 3 = 100 × 3 - __ × 3 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 76 × 9 = 9 × __ 76 | (18 + 7) × 3 = 54 + __ 21 |
| 59 + 88 = 88 + __ 59 | 96 × 9 = 100 × 9 - __ × 9 4 |
| 99 × 2 = 2 × __ 99 | 99 × 5 = (100 - __) × 5 1 |
| 11 × 7 = 7 × __ 11 | (20 + 17) × 5 = 100 + __ 85 |
| 50 + 22 + 31 = (50 + __) + 31 22 | (1 + 2) × 4 = 4 + __ 8 |
| 78 × 7 = 7 × __ 78 | 94 × 7 = 7 × __ 94 |
| 40 + 34 + 33 = (40 + __) + 33 34 | 97 × 5 = 100 × 5 - __ × 5 3 |
| 20 + 60 = 60 + __ 20 | 2 + 44 + 2 = (2 + __) + 2 44 |
| 98 × 2 = (100 - __) × 2 2 | 95 × 6 = 100 × 6 - __ × 6 5 |
| (6 + 2) × 7 = 42 + __ 14 | 47 + 22 = 22 + __ 47 |
| (14 + 20) × 2 = 28 + __ 40 | (17 + 16) × 7 = 119 + __ 112 |
| 18 × 2 = 2 × __ 18 | 3 + 29 + 34 = (3 + __) + 34 29 |
| 37 + 42 + 43 = (37 + __) + 43 42 | 13 × 7 = 7 × __ 13 |
| 20 + 15 + 20 = (20 + __) + 20 15 | 64 + 77 = 77 + __ 64 |
| 97 + 44 = 44 + __ 97 | 25 × 2 = 2 × __ 25 |
| 18 × 8 = 8 × __ 18 | (20 + 3) × 9 = 180 + __ 27 |
| (6 + 17) × 8 = 48 + __ 136 | 81 × 3 = 3 × __ 81 |
| (7 + 4) × 5 = 35 + __ 20 | 96 × 3 = 100 × 3 - __ × 3 4 |