四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 34 + 47 = 47 + __ | 68 + 55 = 55 + __ |
| 67 × 2 = 2 × __ | 27 + 14 + 7 = (27 + __) + 7 |
| 36 × 6 = 6 × __ | 27 + 34 + 42 = (27 + __) + 42 |
| 39 + 38 + 6 = (39 + __) + 6 | 14 + 47 + 16 = (14 + __) + 16 |
| 24 × 7 = 7 × __ | 95 × 5 = 100 × 5 - __ × 5 |
| 98 × 3 = 100 × 3 - __ × 3 | 15 + 22 = 22 + __ |
| 22 + 35 + 23 = (22 + __) + 23 | (20 + 12) × 4 = 80 + __ |
| 22 + 17 + 35 = (22 + __) + 35 | (11 + 8) × 3 = 33 + __ |
| 95 × 4 = (100 - __) × 4 | 82 × 6 = 6 × __ |
| (18 + 19) × 8 = 144 + __ | (19 + 20) × 6 = 114 + __ |
| 75 + 56 = 56 + __ | 78 × 7 = 7 × __ |
| 74 + 47 = 47 + __ | (14 + 17) × 6 = 84 + __ |
| 37 × 3 = 3 × __ | 31 + 38 + 15 = (31 + __) + 15 |
| 74 × 2 = 2 × __ | 99 × 3 = 100 × 3 - __ × 3 |
| 96 × 4 = 100 × 4 - __ × 4 | 37 × 5 = 5 × __ |
| 97 × 9 = (100 - __) × 9 | (14 + 5) × 6 = 84 + __ |
| 27 + 12 + 38 = (27 + __) + 38 | 86 + 25 = 25 + __ |
| 95 × 5 = 100 × 5 - __ × 5 | (9 + 4) × 7 = 63 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 34 + 47 = 47 + __ 34 | 68 + 55 = 55 + __ 68 |
| 67 × 2 = 2 × __ 67 | 27 + 14 + 7 = (27 + __) + 7 14 |
| 36 × 6 = 6 × __ 36 | 27 + 34 + 42 = (27 + __) + 42 34 |
| 39 + 38 + 6 = (39 + __) + 6 38 | 14 + 47 + 16 = (14 + __) + 16 47 |
| 24 × 7 = 7 × __ 24 | 95 × 5 = 100 × 5 - __ × 5 5 |
| 98 × 3 = 100 × 3 - __ × 3 2 | 15 + 22 = 22 + __ 15 |
| 22 + 35 + 23 = (22 + __) + 23 35 | (20 + 12) × 4 = 80 + __ 48 |
| 22 + 17 + 35 = (22 + __) + 35 17 | (11 + 8) × 3 = 33 + __ 24 |
| 95 × 4 = (100 - __) × 4 5 | 82 × 6 = 6 × __ 82 |
| (18 + 19) × 8 = 144 + __ 152 | (19 + 20) × 6 = 114 + __ 120 |
| 75 + 56 = 56 + __ 75 | 78 × 7 = 7 × __ 78 |
| 74 + 47 = 47 + __ 74 | (14 + 17) × 6 = 84 + __ 102 |
| 37 × 3 = 3 × __ 37 | 31 + 38 + 15 = (31 + __) + 15 38 |
| 74 × 2 = 2 × __ 74 | 99 × 3 = 100 × 3 - __ × 3 1 |
| 96 × 4 = 100 × 4 - __ × 4 4 | 37 × 5 = 5 × __ 37 |
| 97 × 9 = (100 - __) × 9 3 | (14 + 5) × 6 = 84 + __ 30 |
| 27 + 12 + 38 = (27 + __) + 38 12 | 86 + 25 = 25 + __ 86 |
| 95 × 5 = 100 × 5 - __ × 5 5 | (9 + 4) × 7 = 63 + __ 28 |