四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 69 × 3 = 3 × __ | 47 + 28 + 21 = (47 + __) + 21 |
| (10 + 19) × 8 = 80 + __ | 98 × 9 = 100 × 9 - __ × 9 |
| 47 + 46 = 46 + __ | 21 + 13 + 19 = (21 + __) + 19 |
| 76 × 6 = 6 × __ | (2 + 4) × 5 = 10 + __ |
| (20 + 6) × 8 = 160 + __ | 17 + 15 = 15 + __ |
| 31 × 8 = 8 × __ | 36 + 13 = 13 + __ |
| 86 + 22 = 22 + __ | 53 × 2 = 2 × __ |
| 96 × 7 = (100 - __) × 7 | 43 + 49 + 37 = (43 + __) + 37 |
| (5 + 12) × 7 = 35 + __ | 50 + 97 = 97 + __ |
| 95 × 5 = (100 - __) × 5 | (9 + 6) × 5 = 45 + __ |
| 76 + 60 = 60 + __ | 87 + 60 = 60 + __ |
| 5 + 12 + 29 = (5 + __) + 29 | 61 × 6 = 6 × __ |
| 25 + 10 + 2 = (25 + __) + 2 | 64 + 35 = 35 + __ |
| (1 + 8) × 6 = 6 + __ | 5 × 2 = 2 × __ |
| 9 + 1 + 35 = (9 + __) + 35 | (17 + 7) × 2 = 34 + __ |
| 76 + 87 = 87 + __ | 96 × 3 = (100 - __) × 3 |
| 32 × 7 = 7 × __ | 2 + 50 + 30 = (2 + __) + 30 |
| 96 × 3 = (100 - __) × 3 | 11 + 36 + 48 = (11 + __) + 48 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 69 × 3 = 3 × __ 69 | 47 + 28 + 21 = (47 + __) + 21 28 |
| (10 + 19) × 8 = 80 + __ 152 | 98 × 9 = 100 × 9 - __ × 9 2 |
| 47 + 46 = 46 + __ 47 | 21 + 13 + 19 = (21 + __) + 19 13 |
| 76 × 6 = 6 × __ 76 | (2 + 4) × 5 = 10 + __ 20 |
| (20 + 6) × 8 = 160 + __ 48 | 17 + 15 = 15 + __ 17 |
| 31 × 8 = 8 × __ 31 | 36 + 13 = 13 + __ 36 |
| 86 + 22 = 22 + __ 86 | 53 × 2 = 2 × __ 53 |
| 96 × 7 = (100 - __) × 7 4 | 43 + 49 + 37 = (43 + __) + 37 49 |
| (5 + 12) × 7 = 35 + __ 84 | 50 + 97 = 97 + __ 50 |
| 95 × 5 = (100 - __) × 5 5 | (9 + 6) × 5 = 45 + __ 30 |
| 76 + 60 = 60 + __ 76 | 87 + 60 = 60 + __ 87 |
| 5 + 12 + 29 = (5 + __) + 29 12 | 61 × 6 = 6 × __ 61 |
| 25 + 10 + 2 = (25 + __) + 2 10 | 64 + 35 = 35 + __ 64 |
| (1 + 8) × 6 = 6 + __ 48 | 5 × 2 = 2 × __ 5 |
| 9 + 1 + 35 = (9 + __) + 35 1 | (17 + 7) × 2 = 34 + __ 14 |
| 76 + 87 = 87 + __ 76 | 96 × 3 = (100 - __) × 3 4 |
| 32 × 7 = 7 × __ 32 | 2 + 50 + 30 = (2 + __) + 30 50 |
| 96 × 3 = (100 - __) × 3 4 | 11 + 36 + 48 = (11 + __) + 48 36 |