四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 38 + 22 + 9 = (38 + __) + 9 | 95 × 8 = 100 × 8 - __ × 8 |
| 63 + 85 = 85 + __ | (12 + 13) × 7 = 84 + __ |
| 97 × 8 = (100 - __) × 8 | 98 × 4 = (100 - __) × 4 |
| 6 + 32 + 36 = (6 + __) + 36 | 60 × 6 = 6 × __ |
| (15 + 7) × 2 = 30 + __ | 98 × 4 = 100 × 4 - __ × 4 |
| 98 × 6 = (100 - __) × 6 | 39 + 8 + 30 = (39 + __) + 30 |
| 26 × 3 = 3 × __ | (4 + 13) × 4 = 16 + __ |
| 12 + 38 + 21 = (12 + __) + 21 | (18 + 19) × 5 = 90 + __ |
| 81 × 7 = 7 × __ | 99 × 3 = 100 × 3 - __ × 3 |
| (16 + 13) × 2 = 32 + __ | 44 + 48 + 4 = (44 + __) + 4 |
| 33 + 20 + 37 = (33 + __) + 37 | 88 + 22 = 22 + __ |
| 73 × 5 = 5 × __ | (5 + 1) × 4 = 20 + __ |
| 39 + 21 + 9 = (39 + __) + 9 | 99 + 96 = 96 + __ |
| 66 × 6 = 6 × __ | 41 + 68 = 68 + __ |
| 96 × 3 = 3 × __ | 3 + 3 + 8 = (3 + __) + 8 |
| 56 + 69 = 69 + __ | (11 + 5) × 3 = 33 + __ |
| 52 + 23 = 23 + __ | 72 + 75 = 75 + __ |
| 94 × 3 = 3 × __ | 21 + 26 = 26 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 38 + 22 + 9 = (38 + __) + 9 22 | 95 × 8 = 100 × 8 - __ × 8 5 |
| 63 + 85 = 85 + __ 63 | (12 + 13) × 7 = 84 + __ 91 |
| 97 × 8 = (100 - __) × 8 3 | 98 × 4 = (100 - __) × 4 2 |
| 6 + 32 + 36 = (6 + __) + 36 32 | 60 × 6 = 6 × __ 60 |
| (15 + 7) × 2 = 30 + __ 14 | 98 × 4 = 100 × 4 - __ × 4 2 |
| 98 × 6 = (100 - __) × 6 2 | 39 + 8 + 30 = (39 + __) + 30 8 |
| 26 × 3 = 3 × __ 26 | (4 + 13) × 4 = 16 + __ 52 |
| 12 + 38 + 21 = (12 + __) + 21 38 | (18 + 19) × 5 = 90 + __ 95 |
| 81 × 7 = 7 × __ 81 | 99 × 3 = 100 × 3 - __ × 3 1 |
| (16 + 13) × 2 = 32 + __ 26 | 44 + 48 + 4 = (44 + __) + 4 48 |
| 33 + 20 + 37 = (33 + __) + 37 20 | 88 + 22 = 22 + __ 88 |
| 73 × 5 = 5 × __ 73 | (5 + 1) × 4 = 20 + __ 4 |
| 39 + 21 + 9 = (39 + __) + 9 21 | 99 + 96 = 96 + __ 99 |
| 66 × 6 = 6 × __ 66 | 41 + 68 = 68 + __ 41 |
| 96 × 3 = 3 × __ 96 | 3 + 3 + 8 = (3 + __) + 8 3 |
| 56 + 69 = 69 + __ 56 | (11 + 5) × 3 = 33 + __ 15 |
| 52 + 23 = 23 + __ 52 | 72 + 75 = 75 + __ 72 |
| 94 × 3 = 3 × __ 94 | 21 + 26 = 26 + __ 21 |