四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 79 + 54 = 54 + __ | (10 + 12) × 6 = 60 + __ |
| 65 × 3 = 3 × __ | 59 × 7 = 7 × __ |
| 32 × 5 = 5 × __ | 42 + 27 + 23 = (42 + __) + 23 |
| 98 × 6 = (100 - __) × 6 | 33 × 8 = 8 × __ |
| 48 + 4 + 37 = (48 + __) + 37 | 71 × 7 = 7 × __ |
| 43 + 47 = 47 + __ | 95 × 5 = 100 × 5 - __ × 5 |
| 97 × 4 = 100 × 4 - __ × 4 | 79 + 82 = 82 + __ |
| 96 × 4 = 4 × __ | 83 + 46 = 46 + __ |
| 96 × 4 = 100 × 4 - __ × 4 | 47 × 7 = 7 × __ |
| 95 × 7 = 100 × 7 - __ × 7 | 98 × 4 = 100 × 4 - __ × 4 |
| (8 + 8) × 4 = 32 + __ | (15 + 15) × 8 = 120 + __ |
| 2 + 45 + 28 = (2 + __) + 28 | (12 + 11) × 4 = 48 + __ |
| 31 + 13 + 50 = (31 + __) + 50 | 21 + 17 + 42 = (21 + __) + 42 |
| (19 + 12) × 9 = 171 + __ | 98 × 7 = 100 × 7 - __ × 7 |
| 98 × 7 = 7 × __ | 75 + 64 = 64 + __ |
| (15 + 3) × 6 = 90 + __ | (3 + 14) × 7 = 21 + __ |
| 16 + 41 + 9 = (16 + __) + 9 | 84 + 72 = 72 + __ |
| 12 + 16 + 15 = (12 + __) + 15 | (8 + 3) × 5 = 40 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 79 + 54 = 54 + __ 79 | (10 + 12) × 6 = 60 + __ 72 |
| 65 × 3 = 3 × __ 65 | 59 × 7 = 7 × __ 59 |
| 32 × 5 = 5 × __ 32 | 42 + 27 + 23 = (42 + __) + 23 27 |
| 98 × 6 = (100 - __) × 6 2 | 33 × 8 = 8 × __ 33 |
| 48 + 4 + 37 = (48 + __) + 37 4 | 71 × 7 = 7 × __ 71 |
| 43 + 47 = 47 + __ 43 | 95 × 5 = 100 × 5 - __ × 5 5 |
| 97 × 4 = 100 × 4 - __ × 4 3 | 79 + 82 = 82 + __ 79 |
| 96 × 4 = 4 × __ 96 | 83 + 46 = 46 + __ 83 |
| 96 × 4 = 100 × 4 - __ × 4 4 | 47 × 7 = 7 × __ 47 |
| 95 × 7 = 100 × 7 - __ × 7 5 | 98 × 4 = 100 × 4 - __ × 4 2 |
| (8 + 8) × 4 = 32 + __ 32 | (15 + 15) × 8 = 120 + __ 120 |
| 2 + 45 + 28 = (2 + __) + 28 45 | (12 + 11) × 4 = 48 + __ 44 |
| 31 + 13 + 50 = (31 + __) + 50 13 | 21 + 17 + 42 = (21 + __) + 42 17 |
| (19 + 12) × 9 = 171 + __ 108 | 98 × 7 = 100 × 7 - __ × 7 2 |
| 98 × 7 = 7 × __ 98 | 75 + 64 = 64 + __ 75 |
| (15 + 3) × 6 = 90 + __ 18 | (3 + 14) × 7 = 21 + __ 98 |
| 16 + 41 + 9 = (16 + __) + 9 41 | 84 + 72 = 72 + __ 84 |
| 12 + 16 + 15 = (12 + __) + 15 16 | (8 + 3) × 5 = 40 + __ 15 |