四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 99 × 7 = (100 - __) × 7 | 97 × 5 = (100 - __) × 5 |
| 47 + 38 + 33 = (47 + __) + 33 | 97 × 3 = (100 - __) × 3 |
| 95 × 7 = 100 × 7 - __ × 7 | 51 + 31 = 31 + __ |
| 43 × 7 = 7 × __ | 21 + 98 = 98 + __ |
| 62 + 76 = 76 + __ | (13 + 3) × 5 = 65 + __ |
| (4 + 4) × 2 = 8 + __ | 29 × 9 = 9 × __ |
| 97 × 7 = 100 × 7 - __ × 7 | 99 + 15 = 15 + __ |
| (12 + 12) × 5 = 60 + __ | 97 × 5 = (100 - __) × 5 |
| 41 + 38 + 20 = (41 + __) + 20 | 79 + 22 = 22 + __ |
| 30 + 11 + 49 = (30 + __) + 49 | 37 × 7 = 7 × __ |
| 95 × 8 = (100 - __) × 8 | 87 × 7 = 7 × __ |
| (11 + 17) × 8 = 88 + __ | 5 + 1 + 44 = (5 + __) + 44 |
| (6 + 4) × 3 = 18 + __ | (4 + 17) × 7 = 28 + __ |
| 42 × 3 = 3 × __ | 95 × 7 = 7 × __ |
| 92 + 26 = 26 + __ | 87 + 48 = 48 + __ |
| (13 + 15) × 7 = 91 + __ | 96 × 4 = (100 - __) × 4 |
| 96 × 3 = 100 × 3 - __ × 3 | 95 + 52 = 52 + __ |
| 70 + 48 = 48 + __ | (9 + 19) × 5 = 45 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 99 × 7 = (100 - __) × 7 1 | 97 × 5 = (100 - __) × 5 3 |
| 47 + 38 + 33 = (47 + __) + 33 38 | 97 × 3 = (100 - __) × 3 3 |
| 95 × 7 = 100 × 7 - __ × 7 5 | 51 + 31 = 31 + __ 51 |
| 43 × 7 = 7 × __ 43 | 21 + 98 = 98 + __ 21 |
| 62 + 76 = 76 + __ 62 | (13 + 3) × 5 = 65 + __ 15 |
| (4 + 4) × 2 = 8 + __ 8 | 29 × 9 = 9 × __ 29 |
| 97 × 7 = 100 × 7 - __ × 7 3 | 99 + 15 = 15 + __ 99 |
| (12 + 12) × 5 = 60 + __ 60 | 97 × 5 = (100 - __) × 5 3 |
| 41 + 38 + 20 = (41 + __) + 20 38 | 79 + 22 = 22 + __ 79 |
| 30 + 11 + 49 = (30 + __) + 49 11 | 37 × 7 = 7 × __ 37 |
| 95 × 8 = (100 - __) × 8 5 | 87 × 7 = 7 × __ 87 |
| (11 + 17) × 8 = 88 + __ 136 | 5 + 1 + 44 = (5 + __) + 44 1 |
| (6 + 4) × 3 = 18 + __ 12 | (4 + 17) × 7 = 28 + __ 119 |
| 42 × 3 = 3 × __ 42 | 95 × 7 = 7 × __ 95 |
| 92 + 26 = 26 + __ 92 | 87 + 48 = 48 + __ 87 |
| (13 + 15) × 7 = 91 + __ 105 | 96 × 4 = (100 - __) × 4 4 |
| 96 × 3 = 100 × 3 - __ × 3 4 | 95 + 52 = 52 + __ 95 |
| 70 + 48 = 48 + __ 70 | (9 + 19) × 5 = 45 + __ 95 |