四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 99 × 6 = 6 × __ | 53 + 21 = 21 + __ |
| 14 + 44 = 44 + __ | 76 × 6 = 6 × __ |
| 97 × 7 = (100 - __) × 7 | (8 + 9) × 9 = 72 + __ |
| (12 + 18) × 2 = 24 + __ | (3 + 9) × 6 = 18 + __ |
| 72 × 7 = 7 × __ | 68 + 88 = 88 + __ |
| 74 × 6 = 6 × __ | 46 + 40 + 36 = (46 + __) + 36 |
| 49 × 5 = 5 × __ | 96 × 9 = 100 × 9 - __ × 9 |
| 96 × 8 = (100 - __) × 8 | 34 + 4 + 27 = (34 + __) + 27 |
| 92 × 4 = 4 × __ | (11 + 10) × 5 = 55 + __ |
| 98 × 8 = (100 - __) × 8 | 95 × 5 = 100 × 5 - __ × 5 |
| 96 × 5 = 100 × 5 - __ × 5 | (4 + 8) × 8 = 32 + __ |
| 6 + 44 + 6 = (6 + __) + 6 | (1 + 4) × 2 = 2 + __ |
| (7 + 17) × 3 = 21 + __ | 46 + 10 + 7 = (46 + __) + 7 |
| (7 + 17) × 4 = 28 + __ | 34 + 47 = 47 + __ |
| 77 × 8 = 8 × __ | 99 × 4 = 100 × 4 - __ × 4 |
| (3 + 13) × 5 = 15 + __ | 76 × 6 = 6 × __ |
| 96 + 75 = 75 + __ | 14 + 38 + 25 = (14 + __) + 25 |
| 27 × 4 = 4 × __ | 16 + 47 + 33 = (16 + __) + 33 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 99 × 6 = 6 × __ 99 | 53 + 21 = 21 + __ 53 |
| 14 + 44 = 44 + __ 14 | 76 × 6 = 6 × __ 76 |
| 97 × 7 = (100 - __) × 7 3 | (8 + 9) × 9 = 72 + __ 81 |
| (12 + 18) × 2 = 24 + __ 36 | (3 + 9) × 6 = 18 + __ 54 |
| 72 × 7 = 7 × __ 72 | 68 + 88 = 88 + __ 68 |
| 74 × 6 = 6 × __ 74 | 46 + 40 + 36 = (46 + __) + 36 40 |
| 49 × 5 = 5 × __ 49 | 96 × 9 = 100 × 9 - __ × 9 4 |
| 96 × 8 = (100 - __) × 8 4 | 34 + 4 + 27 = (34 + __) + 27 4 |
| 92 × 4 = 4 × __ 92 | (11 + 10) × 5 = 55 + __ 50 |
| 98 × 8 = (100 - __) × 8 2 | 95 × 5 = 100 × 5 - __ × 5 5 |
| 96 × 5 = 100 × 5 - __ × 5 4 | (4 + 8) × 8 = 32 + __ 64 |
| 6 + 44 + 6 = (6 + __) + 6 44 | (1 + 4) × 2 = 2 + __ 8 |
| (7 + 17) × 3 = 21 + __ 51 | 46 + 10 + 7 = (46 + __) + 7 10 |
| (7 + 17) × 4 = 28 + __ 68 | 34 + 47 = 47 + __ 34 |
| 77 × 8 = 8 × __ 77 | 99 × 4 = 100 × 4 - __ × 4 1 |
| (3 + 13) × 5 = 15 + __ 65 | 76 × 6 = 6 × __ 76 |
| 96 + 75 = 75 + __ 96 | 14 + 38 + 25 = (14 + __) + 25 38 |
| 27 × 4 = 4 × __ 27 | 16 + 47 + 33 = (16 + __) + 33 47 |