四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 48 + 36 = 36 + __ | 49 + 14 + 34 = (49 + __) + 34 |
| 46 + 39 + 30 = (46 + __) + 30 | 95 × 7 = 100 × 7 - __ × 7 |
| 2 + 4 + 50 = (2 + __) + 50 | 96 × 3 = 100 × 3 - __ × 3 |
| 98 × 5 = (100 - __) × 5 | 43 × 7 = 7 × __ |
| 9 + 40 + 9 = (9 + __) + 9 | 96 × 3 = 100 × 3 - __ × 3 |
| (18 + 14) × 7 = 126 + __ | 67 × 9 = 9 × __ |
| 96 × 7 = (100 - __) × 7 | 95 × 4 = 100 × 4 - __ × 4 |
| 95 × 4 = 4 × __ | 87 × 5 = 5 × __ |
| 35 + 28 = 28 + __ | 56 + 84 = 84 + __ |
| (13 + 17) × 8 = 104 + __ | 20 × 4 = 4 × __ |
| 7 × 3 = 3 × __ | (11 + 18) × 8 = 88 + __ |
| (1 + 7) × 3 = 3 + __ | 6 × 3 = 3 × __ |
| 97 + 60 = 60 + __ | 97 × 8 = 100 × 8 - __ × 8 |
| 36 + 2 + 45 = (36 + __) + 45 | 47 × 2 = 2 × __ |
| 77 + 83 = 83 + __ | 32 × 9 = 9 × __ |
| 26 + 80 = 80 + __ | 98 × 6 = 100 × 6 - __ × 6 |
| 49 + 1 + 35 = (49 + __) + 35 | 96 × 6 = (100 - __) × 6 |
| 94 + 14 = 14 + __ | 35 + 19 + 2 = (35 + __) + 2 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 48 + 36 = 36 + __ 48 | 49 + 14 + 34 = (49 + __) + 34 14 |
| 46 + 39 + 30 = (46 + __) + 30 39 | 95 × 7 = 100 × 7 - __ × 7 5 |
| 2 + 4 + 50 = (2 + __) + 50 4 | 96 × 3 = 100 × 3 - __ × 3 4 |
| 98 × 5 = (100 - __) × 5 2 | 43 × 7 = 7 × __ 43 |
| 9 + 40 + 9 = (9 + __) + 9 40 | 96 × 3 = 100 × 3 - __ × 3 4 |
| (18 + 14) × 7 = 126 + __ 98 | 67 × 9 = 9 × __ 67 |
| 96 × 7 = (100 - __) × 7 4 | 95 × 4 = 100 × 4 - __ × 4 5 |
| 95 × 4 = 4 × __ 95 | 87 × 5 = 5 × __ 87 |
| 35 + 28 = 28 + __ 35 | 56 + 84 = 84 + __ 56 |
| (13 + 17) × 8 = 104 + __ 136 | 20 × 4 = 4 × __ 20 |
| 7 × 3 = 3 × __ 7 | (11 + 18) × 8 = 88 + __ 144 |
| (1 + 7) × 3 = 3 + __ 21 | 6 × 3 = 3 × __ 6 |
| 97 + 60 = 60 + __ 97 | 97 × 8 = 100 × 8 - __ × 8 3 |
| 36 + 2 + 45 = (36 + __) + 45 2 | 47 × 2 = 2 × __ 47 |
| 77 + 83 = 83 + __ 77 | 32 × 9 = 9 × __ 32 |
| 26 + 80 = 80 + __ 26 | 98 × 6 = 100 × 6 - __ × 6 2 |
| 49 + 1 + 35 = (49 + __) + 35 1 | 96 × 6 = (100 - __) × 6 4 |
| 94 + 14 = 14 + __ 94 | 35 + 19 + 2 = (35 + __) + 2 19 |