四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 27 + 48 + 16 = (27 + __) + 16 | 95 × 3 = 100 × 3 - __ × 3 |
| 33 + 31 + 11 = (33 + __) + 11 | 15 + 85 = 85 + __ |
| 32 × 9 = 9 × __ | (5 + 7) × 9 = 45 + __ |
| 95 × 9 = (100 - __) × 9 | 43 + 84 = 84 + __ |
| 42 + 43 = 43 + __ | 8 + 35 + 8 = (8 + __) + 8 |
| (14 + 5) × 6 = 84 + __ | 12 + 84 = 84 + __ |
| 60 × 4 = 4 × __ | 98 × 3 = (100 - __) × 3 |
| 95 × 8 = (100 - __) × 8 | (4 + 20) × 3 = 12 + __ |
| 27 + 17 = 17 + __ | (16 + 13) × 8 = 128 + __ |
| 39 + 85 = 85 + __ | 18 × 3 = 3 × __ |
| 38 × 3 = 3 × __ | 32 × 7 = 7 × __ |
| (19 + 19) × 4 = 76 + __ | 40 + 43 + 8 = (40 + __) + 8 |
| (7 + 20) × 3 = 21 + __ | (8 + 1) × 8 = 64 + __ |
| 62 + 85 = 85 + __ | 11 + 35 + 39 = (11 + __) + 39 |
| (9 + 2) × 6 = 54 + __ | 96 × 8 = (100 - __) × 8 |
| 82 + 82 = 82 + __ | 44 + 56 = 56 + __ |
| 33 + 36 + 15 = (33 + __) + 15 | 64 × 6 = 6 × __ |
| 96 × 5 = (100 - __) × 5 | (15 + 4) × 9 = 135 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 27 + 48 + 16 = (27 + __) + 16 48 | 95 × 3 = 100 × 3 - __ × 3 5 |
| 33 + 31 + 11 = (33 + __) + 11 31 | 15 + 85 = 85 + __ 15 |
| 32 × 9 = 9 × __ 32 | (5 + 7) × 9 = 45 + __ 63 |
| 95 × 9 = (100 - __) × 9 5 | 43 + 84 = 84 + __ 43 |
| 42 + 43 = 43 + __ 42 | 8 + 35 + 8 = (8 + __) + 8 35 |
| (14 + 5) × 6 = 84 + __ 30 | 12 + 84 = 84 + __ 12 |
| 60 × 4 = 4 × __ 60 | 98 × 3 = (100 - __) × 3 2 |
| 95 × 8 = (100 - __) × 8 5 | (4 + 20) × 3 = 12 + __ 60 |
| 27 + 17 = 17 + __ 27 | (16 + 13) × 8 = 128 + __ 104 |
| 39 + 85 = 85 + __ 39 | 18 × 3 = 3 × __ 18 |
| 38 × 3 = 3 × __ 38 | 32 × 7 = 7 × __ 32 |
| (19 + 19) × 4 = 76 + __ 76 | 40 + 43 + 8 = (40 + __) + 8 43 |
| (7 + 20) × 3 = 21 + __ 60 | (8 + 1) × 8 = 64 + __ 8 |
| 62 + 85 = 85 + __ 62 | 11 + 35 + 39 = (11 + __) + 39 35 |
| (9 + 2) × 6 = 54 + __ 12 | 96 × 8 = (100 - __) × 8 4 |
| 82 + 82 = 82 + __ 82 | 44 + 56 = 56 + __ 44 |
| 33 + 36 + 15 = (33 + __) + 15 36 | 64 × 6 = 6 × __ 64 |
| 96 × 5 = (100 - __) × 5 4 | (15 + 4) × 9 = 135 + __ 36 |