四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 16 + 48 = 48 + __ | (14 + 15) × 9 = 126 + __ |
| 98 × 3 = 100 × 3 - __ × 3 | 22 + 2 + 33 = (22 + __) + 33 |
| 96 × 5 = 100 × 5 - __ × 5 | 2 + 39 + 32 = (2 + __) + 32 |
| (9 + 15) × 4 = 36 + __ | 73 + 10 = 10 + __ |
| (17 + 20) × 9 = 153 + __ | 17 + 50 + 11 = (17 + __) + 11 |
| 25 + 25 + 23 = (25 + __) + 23 | 78 × 4 = 4 × __ |
| 98 × 2 = (100 - __) × 2 | 96 × 7 = (100 - __) × 7 |
| 13 + 18 + 14 = (13 + __) + 14 | 95 × 3 = (100 - __) × 3 |
| 7 + 38 + 4 = (7 + __) + 4 | 21 + 12 + 21 = (21 + __) + 21 |
| 52 + 29 = 29 + __ | 98 × 5 = (100 - __) × 5 |
| 31 + 58 = 58 + __ | 55 × 8 = 8 × __ |
| 63 + 49 = 49 + __ | 53 + 16 = 16 + __ |
| (15 + 15) × 8 = 120 + __ | 37 + 18 + 18 = (37 + __) + 18 |
| 32 + 28 = 28 + __ | 44 × 5 = 5 × __ |
| 97 × 7 = 100 × 7 - __ × 7 | 1 + 5 + 14 = (1 + __) + 14 |
| 79 × 7 = 7 × __ | 34 × 8 = 8 × __ |
| (13 + 7) × 6 = 78 + __ | 52 × 8 = 8 × __ |
| 15 + 16 + 40 = (15 + __) + 40 | 99 × 7 = 100 × 7 - __ × 7 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 16 + 48 = 48 + __ 16 | (14 + 15) × 9 = 126 + __ 135 |
| 98 × 3 = 100 × 3 - __ × 3 2 | 22 + 2 + 33 = (22 + __) + 33 2 |
| 96 × 5 = 100 × 5 - __ × 5 4 | 2 + 39 + 32 = (2 + __) + 32 39 |
| (9 + 15) × 4 = 36 + __ 60 | 73 + 10 = 10 + __ 73 |
| (17 + 20) × 9 = 153 + __ 180 | 17 + 50 + 11 = (17 + __) + 11 50 |
| 25 + 25 + 23 = (25 + __) + 23 25 | 78 × 4 = 4 × __ 78 |
| 98 × 2 = (100 - __) × 2 2 | 96 × 7 = (100 - __) × 7 4 |
| 13 + 18 + 14 = (13 + __) + 14 18 | 95 × 3 = (100 - __) × 3 5 |
| 7 + 38 + 4 = (7 + __) + 4 38 | 21 + 12 + 21 = (21 + __) + 21 12 |
| 52 + 29 = 29 + __ 52 | 98 × 5 = (100 - __) × 5 2 |
| 31 + 58 = 58 + __ 31 | 55 × 8 = 8 × __ 55 |
| 63 + 49 = 49 + __ 63 | 53 + 16 = 16 + __ 53 |
| (15 + 15) × 8 = 120 + __ 120 | 37 + 18 + 18 = (37 + __) + 18 18 |
| 32 + 28 = 28 + __ 32 | 44 × 5 = 5 × __ 44 |
| 97 × 7 = 100 × 7 - __ × 7 3 | 1 + 5 + 14 = (1 + __) + 14 5 |
| 79 × 7 = 7 × __ 79 | 34 × 8 = 8 × __ 34 |
| (13 + 7) × 6 = 78 + __ 42 | 52 × 8 = 8 × __ 52 |
| 15 + 16 + 40 = (15 + __) + 40 16 | 99 × 7 = 100 × 7 - __ × 7 1 |