四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 10 × 7 = 7 × __ | (7 + 17) × 6 = 42 + __ |
| 2 + 32 + 5 = (2 + __) + 5 | 96 × 5 = 100 × 5 - __ × 5 |
| 6 + 23 + 11 = (6 + __) + 11 | (4 + 3) × 8 = 32 + __ |
| 98 × 7 = 7 × __ | 96 × 8 = 100 × 8 - __ × 8 |
| 99 × 4 = 100 × 4 - __ × 4 | 90 × 2 = 2 × __ |
| (20 + 18) × 2 = 40 + __ | 95 + 14 = 14 + __ |
| 60 + 74 = 74 + __ | 74 + 42 = 42 + __ |
| 98 × 9 = 100 × 9 - __ × 9 | 97 × 4 = 100 × 4 - __ × 4 |
| 11 + 44 + 19 = (11 + __) + 19 | 74 + 98 = 98 + __ |
| 96 × 9 = 9 × __ | 19 + 91 = 91 + __ |
| 9 + 7 + 50 = (9 + __) + 50 | 69 × 9 = 9 × __ |
| 41 + 42 + 5 = (41 + __) + 5 | 97 × 3 = 100 × 3 - __ × 3 |
| 95 × 3 = 3 × __ | 96 × 6 = 100 × 6 - __ × 6 |
| 97 × 3 = (100 - __) × 3 | 97 + 48 = 48 + __ |
| 5 × 8 = 8 × __ | 19 + 38 + 48 = (19 + __) + 48 |
| 96 + 98 = 98 + __ | (9 + 15) × 4 = 36 + __ |
| 7 + 4 + 1 = (7 + __) + 1 | (16 + 20) × 6 = 96 + __ |
| (9 + 1) × 5 = 45 + __ | 13 + 12 + 18 = (13 + __) + 18 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 10 × 7 = 7 × __ 10 | (7 + 17) × 6 = 42 + __ 102 |
| 2 + 32 + 5 = (2 + __) + 5 32 | 96 × 5 = 100 × 5 - __ × 5 4 |
| 6 + 23 + 11 = (6 + __) + 11 23 | (4 + 3) × 8 = 32 + __ 24 |
| 98 × 7 = 7 × __ 98 | 96 × 8 = 100 × 8 - __ × 8 4 |
| 99 × 4 = 100 × 4 - __ × 4 1 | 90 × 2 = 2 × __ 90 |
| (20 + 18) × 2 = 40 + __ 36 | 95 + 14 = 14 + __ 95 |
| 60 + 74 = 74 + __ 60 | 74 + 42 = 42 + __ 74 |
| 98 × 9 = 100 × 9 - __ × 9 2 | 97 × 4 = 100 × 4 - __ × 4 3 |
| 11 + 44 + 19 = (11 + __) + 19 44 | 74 + 98 = 98 + __ 74 |
| 96 × 9 = 9 × __ 96 | 19 + 91 = 91 + __ 19 |
| 9 + 7 + 50 = (9 + __) + 50 7 | 69 × 9 = 9 × __ 69 |
| 41 + 42 + 5 = (41 + __) + 5 42 | 97 × 3 = 100 × 3 - __ × 3 3 |
| 95 × 3 = 3 × __ 95 | 96 × 6 = 100 × 6 - __ × 6 4 |
| 97 × 3 = (100 - __) × 3 3 | 97 + 48 = 48 + __ 97 |
| 5 × 8 = 8 × __ 5 | 19 + 38 + 48 = (19 + __) + 48 38 |
| 96 + 98 = 98 + __ 96 | (9 + 15) × 4 = 36 + __ 60 |
| 7 + 4 + 1 = (7 + __) + 1 4 | (16 + 20) × 6 = 96 + __ 120 |
| (9 + 1) × 5 = 45 + __ 5 | 13 + 12 + 18 = (13 + __) + 18 12 |