四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 93 × 7 = 7 × __ | 98 × 2 = (100 - __) × 2 |
| 43 + 6 + 21 = (43 + __) + 21 | 1 + 35 + 49 = (1 + __) + 49 |
| 73 + 97 = 97 + __ | 27 + 14 = 14 + __ |
| 43 × 8 = 8 × __ | 15 + 70 = 70 + __ |
| 22 + 72 = 72 + __ | (3 + 13) × 4 = 12 + __ |
| 6 + 50 + 28 = (6 + __) + 28 | (5 + 9) × 9 = 45 + __ |
| 35 × 7 = 7 × __ | 90 + 55 = 55 + __ |
| (16 + 20) × 5 = 80 + __ | 98 × 3 = 100 × 3 - __ × 3 |
| 98 × 5 = (100 - __) × 5 | (16 + 11) × 8 = 128 + __ |
| 25 + 17 + 6 = (25 + __) + 6 | 89 + 24 = 24 + __ |
| 98 × 4 = 100 × 4 - __ × 4 | 31 × 6 = 6 × __ |
| 37 × 8 = 8 × __ | 99 × 4 = 100 × 4 - __ × 4 |
| 4 + 40 + 39 = (4 + __) + 39 | 95 × 5 = (100 - __) × 5 |
| 95 × 3 = 100 × 3 - __ × 3 | (19 + 15) × 2 = 38 + __ |
| 41 + 7 + 32 = (41 + __) + 32 | 98 × 4 = 100 × 4 - __ × 4 |
| 6 + 15 + 4 = (6 + __) + 4 | (1 + 16) × 5 = 5 + __ |
| 79 × 5 = 5 × __ | 9 + 43 + 28 = (9 + __) + 28 |
| 96 × 5 = 100 × 5 - __ × 5 | 37 + 51 = 51 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 93 × 7 = 7 × __ 93 | 98 × 2 = (100 - __) × 2 2 |
| 43 + 6 + 21 = (43 + __) + 21 6 | 1 + 35 + 49 = (1 + __) + 49 35 |
| 73 + 97 = 97 + __ 73 | 27 + 14 = 14 + __ 27 |
| 43 × 8 = 8 × __ 43 | 15 + 70 = 70 + __ 15 |
| 22 + 72 = 72 + __ 22 | (3 + 13) × 4 = 12 + __ 52 |
| 6 + 50 + 28 = (6 + __) + 28 50 | (5 + 9) × 9 = 45 + __ 81 |
| 35 × 7 = 7 × __ 35 | 90 + 55 = 55 + __ 90 |
| (16 + 20) × 5 = 80 + __ 100 | 98 × 3 = 100 × 3 - __ × 3 2 |
| 98 × 5 = (100 - __) × 5 2 | (16 + 11) × 8 = 128 + __ 88 |
| 25 + 17 + 6 = (25 + __) + 6 17 | 89 + 24 = 24 + __ 89 |
| 98 × 4 = 100 × 4 - __ × 4 2 | 31 × 6 = 6 × __ 31 |
| 37 × 8 = 8 × __ 37 | 99 × 4 = 100 × 4 - __ × 4 1 |
| 4 + 40 + 39 = (4 + __) + 39 40 | 95 × 5 = (100 - __) × 5 5 |
| 95 × 3 = 100 × 3 - __ × 3 5 | (19 + 15) × 2 = 38 + __ 30 |
| 41 + 7 + 32 = (41 + __) + 32 7 | 98 × 4 = 100 × 4 - __ × 4 2 |
| 6 + 15 + 4 = (6 + __) + 4 15 | (1 + 16) × 5 = 5 + __ 80 |
| 79 × 5 = 5 × __ 79 | 9 + 43 + 28 = (9 + __) + 28 43 |
| 96 × 5 = 100 × 5 - __ × 5 4 | 37 + 51 = 51 + __ 37 |