四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| (4 + 12) × 4 = 16 + __ | (2 + 1) × 2 = 4 + __ |
| 26 + 3 + 47 = (26 + __) + 47 | 54 + 47 = 47 + __ |
| 95 × 7 = 100 × 7 - __ × 7 | 23 + 11 + 25 = (23 + __) + 25 |
| 49 + 17 + 1 = (49 + __) + 1 | 97 × 8 = (100 - __) × 8 |
| 96 × 5 = 100 × 5 - __ × 5 | 38 + 58 = 58 + __ |
| 77 × 6 = 6 × __ | 24 + 23 = 23 + __ |
| 33 + 20 + 11 = (33 + __) + 11 | 40 + 22 = 22 + __ |
| 29 + 11 + 21 = (29 + __) + 21 | 7 × 4 = 4 × __ |
| 95 × 6 = (100 - __) × 6 | 17 + 41 = 41 + __ |
| 75 × 9 = 9 × __ | 26 + 94 = 94 + __ |
| 14 + 45 + 12 = (14 + __) + 12 | 55 × 5 = 5 × __ |
| 6 × 3 = 3 × __ | 39 × 2 = 2 × __ |
| 61 × 4 = 4 × __ | 97 × 4 = 100 × 4 - __ × 4 |
| (12 + 13) × 8 = 96 + __ | 43 + 12 + 33 = (43 + __) + 33 |
| 35 + 16 + 32 = (35 + __) + 32 | 69 × 5 = 5 × __ |
| 99 × 5 = (100 - __) × 5 | (3 + 1) × 4 = 12 + __ |
| (12 + 4) × 8 = 96 + __ | (18 + 1) × 9 = 162 + __ |
| 12 + 62 = 62 + __ | (6 + 14) × 3 = 18 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| (4 + 12) × 4 = 16 + __ 48 | (2 + 1) × 2 = 4 + __ 2 |
| 26 + 3 + 47 = (26 + __) + 47 3 | 54 + 47 = 47 + __ 54 |
| 95 × 7 = 100 × 7 - __ × 7 5 | 23 + 11 + 25 = (23 + __) + 25 11 |
| 49 + 17 + 1 = (49 + __) + 1 17 | 97 × 8 = (100 - __) × 8 3 |
| 96 × 5 = 100 × 5 - __ × 5 4 | 38 + 58 = 58 + __ 38 |
| 77 × 6 = 6 × __ 77 | 24 + 23 = 23 + __ 24 |
| 33 + 20 + 11 = (33 + __) + 11 20 | 40 + 22 = 22 + __ 40 |
| 29 + 11 + 21 = (29 + __) + 21 11 | 7 × 4 = 4 × __ 7 |
| 95 × 6 = (100 - __) × 6 5 | 17 + 41 = 41 + __ 17 |
| 75 × 9 = 9 × __ 75 | 26 + 94 = 94 + __ 26 |
| 14 + 45 + 12 = (14 + __) + 12 45 | 55 × 5 = 5 × __ 55 |
| 6 × 3 = 3 × __ 6 | 39 × 2 = 2 × __ 39 |
| 61 × 4 = 4 × __ 61 | 97 × 4 = 100 × 4 - __ × 4 3 |
| (12 + 13) × 8 = 96 + __ 104 | 43 + 12 + 33 = (43 + __) + 33 12 |
| 35 + 16 + 32 = (35 + __) + 32 16 | 69 × 5 = 5 × __ 69 |
| 99 × 5 = (100 - __) × 5 1 | (3 + 1) × 4 = 12 + __ 4 |
| (12 + 4) × 8 = 96 + __ 32 | (18 + 1) × 9 = 162 + __ 9 |
| 12 + 62 = 62 + __ 12 | (6 + 14) × 3 = 18 + __ 42 |