四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| (19 + 5) × 7 = 133 + __ | (20 + 17) × 9 = 180 + __ |
| 97 × 4 = (100 - __) × 4 | 36 × 6 = 6 × __ |
| 48 + 99 = 99 + __ | 96 × 5 = (100 - __) × 5 |
| (4 + 9) × 5 = 20 + __ | 15 × 7 = 7 × __ |
| 11 + 21 + 12 = (11 + __) + 12 | 10 + 22 + 48 = (10 + __) + 48 |
| 61 + 76 = 76 + __ | 76 + 60 = 60 + __ |
| 37 + 7 + 13 = (37 + __) + 13 | 42 + 33 + 18 = (42 + __) + 18 |
| (18 + 13) × 9 = 162 + __ | 20 + 25 = 25 + __ |
| (9 + 20) × 5 = 45 + __ | (3 + 6) × 8 = 24 + __ |
| 30 + 55 = 55 + __ | 38 + 21 = 21 + __ |
| 64 × 9 = 9 × __ | 97 × 7 = 100 × 7 - __ × 7 |
| 96 × 9 = (100 - __) × 9 | 80 × 5 = 5 × __ |
| 99 × 2 = 100 × 2 - __ × 2 | 38 + 44 + 18 = (38 + __) + 18 |
| (3 + 14) × 9 = 27 + __ | 22 + 18 + 26 = (22 + __) + 26 |
| 58 × 2 = 2 × __ | 99 × 4 = 4 × __ |
| 42 + 58 = 58 + __ | 99 × 8 = 100 × 8 - __ × 8 |
| (12 + 12) × 8 = 96 + __ | 78 × 5 = 5 × __ |
| 40 × 7 = 7 × __ | 43 × 6 = 6 × __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| (19 + 5) × 7 = 133 + __ 35 | (20 + 17) × 9 = 180 + __ 153 |
| 97 × 4 = (100 - __) × 4 3 | 36 × 6 = 6 × __ 36 |
| 48 + 99 = 99 + __ 48 | 96 × 5 = (100 - __) × 5 4 |
| (4 + 9) × 5 = 20 + __ 45 | 15 × 7 = 7 × __ 15 |
| 11 + 21 + 12 = (11 + __) + 12 21 | 10 + 22 + 48 = (10 + __) + 48 22 |
| 61 + 76 = 76 + __ 61 | 76 + 60 = 60 + __ 76 |
| 37 + 7 + 13 = (37 + __) + 13 7 | 42 + 33 + 18 = (42 + __) + 18 33 |
| (18 + 13) × 9 = 162 + __ 117 | 20 + 25 = 25 + __ 20 |
| (9 + 20) × 5 = 45 + __ 100 | (3 + 6) × 8 = 24 + __ 48 |
| 30 + 55 = 55 + __ 30 | 38 + 21 = 21 + __ 38 |
| 64 × 9 = 9 × __ 64 | 97 × 7 = 100 × 7 - __ × 7 3 |
| 96 × 9 = (100 - __) × 9 4 | 80 × 5 = 5 × __ 80 |
| 99 × 2 = 100 × 2 - __ × 2 1 | 38 + 44 + 18 = (38 + __) + 18 44 |
| (3 + 14) × 9 = 27 + __ 126 | 22 + 18 + 26 = (22 + __) + 26 18 |
| 58 × 2 = 2 × __ 58 | 99 × 4 = 4 × __ 99 |
| 42 + 58 = 58 + __ 42 | 99 × 8 = 100 × 8 - __ × 8 1 |
| (12 + 12) × 8 = 96 + __ 96 | 78 × 5 = 5 × __ 78 |
| 40 × 7 = 7 × __ 40 | 43 × 6 = 6 × __ 43 |