四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 86 × 9 = 9 × __ | 64 + 86 = 86 + __ |
| (18 + 11) × 4 = 72 + __ | (2 + 7) × 5 = 10 + __ |
| 12 + 76 = 76 + __ | 5 + 40 + 35 = (5 + __) + 35 |
| 90 + 61 = 61 + __ | 47 + 36 = 36 + __ |
| (11 + 13) × 2 = 22 + __ | 27 + 99 = 99 + __ |
| 45 × 6 = 6 × __ | 97 × 8 = (100 - __) × 8 |
| 41 + 28 + 19 = (41 + __) + 19 | 19 + 28 + 34 = (19 + __) + 34 |
| (6 + 19) × 6 = 36 + __ | 77 × 3 = 3 × __ |
| 12 × 2 = 2 × __ | 20 + 41 + 48 = (20 + __) + 48 |
| 17 + 10 + 25 = (17 + __) + 25 | (20 + 3) × 9 = 180 + __ |
| 98 × 8 = 100 × 8 - __ × 8 | 98 × 7 = 7 × __ |
| 99 × 8 = 100 × 8 - __ × 8 | (16 + 16) × 4 = 64 + __ |
| 48 + 14 + 22 = (48 + __) + 22 | 4 × 5 = 5 × __ |
| 97 × 9 = (100 - __) × 9 | 39 + 51 = 51 + __ |
| 46 + 38 + 36 = (46 + __) + 36 | 4 × 9 = 9 × __ |
| 32 × 7 = 7 × __ | (19 + 7) × 9 = 171 + __ |
| 40 + 30 + 14 = (40 + __) + 14 | 93 × 3 = 3 × __ |
| 99 × 2 = (100 - __) × 2 | 30 + 49 + 42 = (30 + __) + 42 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 86 × 9 = 9 × __ 86 | 64 + 86 = 86 + __ 64 |
| (18 + 11) × 4 = 72 + __ 44 | (2 + 7) × 5 = 10 + __ 35 |
| 12 + 76 = 76 + __ 12 | 5 + 40 + 35 = (5 + __) + 35 40 |
| 90 + 61 = 61 + __ 90 | 47 + 36 = 36 + __ 47 |
| (11 + 13) × 2 = 22 + __ 26 | 27 + 99 = 99 + __ 27 |
| 45 × 6 = 6 × __ 45 | 97 × 8 = (100 - __) × 8 3 |
| 41 + 28 + 19 = (41 + __) + 19 28 | 19 + 28 + 34 = (19 + __) + 34 28 |
| (6 + 19) × 6 = 36 + __ 114 | 77 × 3 = 3 × __ 77 |
| 12 × 2 = 2 × __ 12 | 20 + 41 + 48 = (20 + __) + 48 41 |
| 17 + 10 + 25 = (17 + __) + 25 10 | (20 + 3) × 9 = 180 + __ 27 |
| 98 × 8 = 100 × 8 - __ × 8 2 | 98 × 7 = 7 × __ 98 |
| 99 × 8 = 100 × 8 - __ × 8 1 | (16 + 16) × 4 = 64 + __ 64 |
| 48 + 14 + 22 = (48 + __) + 22 14 | 4 × 5 = 5 × __ 4 |
| 97 × 9 = (100 - __) × 9 3 | 39 + 51 = 51 + __ 39 |
| 46 + 38 + 36 = (46 + __) + 36 38 | 4 × 9 = 9 × __ 4 |
| 32 × 7 = 7 × __ 32 | (19 + 7) × 9 = 171 + __ 63 |
| 40 + 30 + 14 = (40 + __) + 14 30 | 93 × 3 = 3 × __ 93 |
| 99 × 2 = (100 - __) × 2 1 | 30 + 49 + 42 = (30 + __) + 42 49 |