四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 99 × 6 = (100 - __) × 6 | 96 × 6 = 6 × __ |
| 19 + 96 = 96 + __ | 95 × 2 = (100 - __) × 2 |
| 20 + 19 + 29 = (20 + __) + 29 | (19 + 2) × 8 = 152 + __ |
| 74 + 32 = 32 + __ | 97 × 9 = (100 - __) × 9 |
| 21 + 1 + 12 = (21 + __) + 12 | 1 + 36 + 33 = (1 + __) + 33 |
| (3 + 17) × 4 = 12 + __ | 19 + 15 + 44 = (19 + __) + 44 |
| 27 × 8 = 8 × __ | 37 + 21 = 21 + __ |
| (4 + 20) × 4 = 16 + __ | 48 × 9 = 9 × __ |
| 83 × 7 = 7 × __ | 80 + 65 = 65 + __ |
| 92 × 2 = 2 × __ | 96 × 7 = 100 × 7 - __ × 7 |
| 95 × 7 = (100 - __) × 7 | 23 + 26 = 26 + __ |
| (10 + 1) × 8 = 80 + __ | 80 × 5 = 5 × __ |
| (7 + 7) × 6 = 42 + __ | 96 × 2 = (100 - __) × 2 |
| 97 × 3 = (100 - __) × 3 | 35 + 49 + 20 = (35 + __) + 20 |
| 98 × 8 = 100 × 8 - __ × 8 | 57 + 59 = 59 + __ |
| 65 × 3 = 3 × __ | 83 × 8 = 8 × __ |
| (15 + 17) × 4 = 60 + __ | 67 × 8 = 8 × __ |
| 98 × 9 = 100 × 9 - __ × 9 | 3 + 47 + 15 = (3 + __) + 15 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 99 × 6 = (100 - __) × 6 1 | 96 × 6 = 6 × __ 96 |
| 19 + 96 = 96 + __ 19 | 95 × 2 = (100 - __) × 2 5 |
| 20 + 19 + 29 = (20 + __) + 29 19 | (19 + 2) × 8 = 152 + __ 16 |
| 74 + 32 = 32 + __ 74 | 97 × 9 = (100 - __) × 9 3 |
| 21 + 1 + 12 = (21 + __) + 12 1 | 1 + 36 + 33 = (1 + __) + 33 36 |
| (3 + 17) × 4 = 12 + __ 68 | 19 + 15 + 44 = (19 + __) + 44 15 |
| 27 × 8 = 8 × __ 27 | 37 + 21 = 21 + __ 37 |
| (4 + 20) × 4 = 16 + __ 80 | 48 × 9 = 9 × __ 48 |
| 83 × 7 = 7 × __ 83 | 80 + 65 = 65 + __ 80 |
| 92 × 2 = 2 × __ 92 | 96 × 7 = 100 × 7 - __ × 7 4 |
| 95 × 7 = (100 - __) × 7 5 | 23 + 26 = 26 + __ 23 |
| (10 + 1) × 8 = 80 + __ 8 | 80 × 5 = 5 × __ 80 |
| (7 + 7) × 6 = 42 + __ 42 | 96 × 2 = (100 - __) × 2 4 |
| 97 × 3 = (100 - __) × 3 3 | 35 + 49 + 20 = (35 + __) + 20 49 |
| 98 × 8 = 100 × 8 - __ × 8 2 | 57 + 59 = 59 + __ 57 |
| 65 × 3 = 3 × __ 65 | 83 × 8 = 8 × __ 83 |
| (15 + 17) × 4 = 60 + __ 68 | 67 × 8 = 8 × __ 67 |
| 98 × 9 = 100 × 9 - __ × 9 2 | 3 + 47 + 15 = (3 + __) + 15 47 |