四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 95 + 77 = 77 + __ | 91 × 4 = 4 × __ |
| 98 × 6 = (100 - __) × 6 | 73 × 3 = 3 × __ |
| (15 + 6) × 4 = 60 + __ | 18 + 47 + 22 = (18 + __) + 22 |
| 11 × 2 = 2 × __ | (14 + 19) × 3 = 42 + __ |
| 98 × 6 = (100 - __) × 6 | 33 + 43 + 20 = (33 + __) + 20 |
| 99 × 6 = 100 × 6 - __ × 6 | (19 + 8) × 4 = 76 + __ |
| 96 × 4 = (100 - __) × 4 | 99 × 2 = 100 × 2 - __ × 2 |
| 63 × 9 = 9 × __ | (15 + 9) × 6 = 90 + __ |
| 16 + 25 + 27 = (16 + __) + 27 | 95 × 9 = 9 × __ |
| (3 + 9) × 7 = 21 + __ | 97 + 50 = 50 + __ |
| 49 × 3 = 3 × __ | 53 + 55 = 55 + __ |
| 2 + 11 + 23 = (2 + __) + 23 | 8 + 48 + 1 = (8 + __) + 1 |
| 41 + 98 = 98 + __ | (16 + 5) × 8 = 128 + __ |
| 26 + 17 + 33 = (26 + __) + 33 | 26 + 46 + 40 = (26 + __) + 40 |
| (8 + 5) × 4 = 32 + __ | 3 + 46 + 41 = (3 + __) + 41 |
| 89 + 48 = 48 + __ | 61 + 60 = 60 + __ |
| 98 × 2 = (100 - __) × 2 | 95 × 3 = (100 - __) × 3 |
| (18 + 15) × 8 = 144 + __ | 15 × 2 = 2 × __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 95 + 77 = 77 + __ 95 | 91 × 4 = 4 × __ 91 |
| 98 × 6 = (100 - __) × 6 2 | 73 × 3 = 3 × __ 73 |
| (15 + 6) × 4 = 60 + __ 24 | 18 + 47 + 22 = (18 + __) + 22 47 |
| 11 × 2 = 2 × __ 11 | (14 + 19) × 3 = 42 + __ 57 |
| 98 × 6 = (100 - __) × 6 2 | 33 + 43 + 20 = (33 + __) + 20 43 |
| 99 × 6 = 100 × 6 - __ × 6 1 | (19 + 8) × 4 = 76 + __ 32 |
| 96 × 4 = (100 - __) × 4 4 | 99 × 2 = 100 × 2 - __ × 2 1 |
| 63 × 9 = 9 × __ 63 | (15 + 9) × 6 = 90 + __ 54 |
| 16 + 25 + 27 = (16 + __) + 27 25 | 95 × 9 = 9 × __ 95 |
| (3 + 9) × 7 = 21 + __ 63 | 97 + 50 = 50 + __ 97 |
| 49 × 3 = 3 × __ 49 | 53 + 55 = 55 + __ 53 |
| 2 + 11 + 23 = (2 + __) + 23 11 | 8 + 48 + 1 = (8 + __) + 1 48 |
| 41 + 98 = 98 + __ 41 | (16 + 5) × 8 = 128 + __ 40 |
| 26 + 17 + 33 = (26 + __) + 33 17 | 26 + 46 + 40 = (26 + __) + 40 46 |
| (8 + 5) × 4 = 32 + __ 20 | 3 + 46 + 41 = (3 + __) + 41 46 |
| 89 + 48 = 48 + __ 89 | 61 + 60 = 60 + __ 61 |
| 98 × 2 = (100 - __) × 2 2 | 95 × 3 = (100 - __) × 3 5 |
| (18 + 15) × 8 = 144 + __ 120 | 15 × 2 = 2 × __ 15 |