四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| (15 + 1) × 6 = 90 + __ | 13 + 46 + 13 = (13 + __) + 13 |
| 98 × 3 = 100 × 3 - __ × 3 | 97 × 6 = 100 × 6 - __ × 6 |
| 63 + 23 = 23 + __ | 8 + 5 + 13 = (8 + __) + 13 |
| 61 + 19 = 19 + __ | 78 + 32 = 32 + __ |
| 96 × 3 = 100 × 3 - __ × 3 | 73 × 7 = 7 × __ |
| (1 + 12) × 2 = 2 + __ | 94 + 83 = 83 + __ |
| 90 + 80 = 80 + __ | 96 × 5 = 100 × 5 - __ × 5 |
| (12 + 8) × 3 = 36 + __ | 95 × 8 = (100 - __) × 8 |
| 74 × 3 = 3 × __ | 98 × 4 = (100 - __) × 4 |
| 32 + 3 + 4 = (32 + __) + 4 | 29 + 6 + 48 = (29 + __) + 48 |
| 67 × 3 = 3 × __ | 6 × 9 = 9 × __ |
| (17 + 6) × 3 = 51 + __ | (2 + 4) × 4 = 8 + __ |
| 41 + 34 + 14 = (41 + __) + 14 | 23 × 7 = 7 × __ |
| 56 × 4 = 4 × __ | 97 × 2 = 100 × 2 - __ × 2 |
| 11 + 11 = 11 + __ | 99 × 5 = (100 - __) × 5 |
| 39 + 39 = 39 + __ | (18 + 3) × 4 = 72 + __ |
| 42 + 27 + 18 = (42 + __) + 18 | 45 + 48 + 27 = (45 + __) + 27 |
| 23 × 2 = 2 × __ | (7 + 6) × 3 = 21 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| (15 + 1) × 6 = 90 + __ 6 | 13 + 46 + 13 = (13 + __) + 13 46 |
| 98 × 3 = 100 × 3 - __ × 3 2 | 97 × 6 = 100 × 6 - __ × 6 3 |
| 63 + 23 = 23 + __ 63 | 8 + 5 + 13 = (8 + __) + 13 5 |
| 61 + 19 = 19 + __ 61 | 78 + 32 = 32 + __ 78 |
| 96 × 3 = 100 × 3 - __ × 3 4 | 73 × 7 = 7 × __ 73 |
| (1 + 12) × 2 = 2 + __ 24 | 94 + 83 = 83 + __ 94 |
| 90 + 80 = 80 + __ 90 | 96 × 5 = 100 × 5 - __ × 5 4 |
| (12 + 8) × 3 = 36 + __ 24 | 95 × 8 = (100 - __) × 8 5 |
| 74 × 3 = 3 × __ 74 | 98 × 4 = (100 - __) × 4 2 |
| 32 + 3 + 4 = (32 + __) + 4 3 | 29 + 6 + 48 = (29 + __) + 48 6 |
| 67 × 3 = 3 × __ 67 | 6 × 9 = 9 × __ 6 |
| (17 + 6) × 3 = 51 + __ 18 | (2 + 4) × 4 = 8 + __ 16 |
| 41 + 34 + 14 = (41 + __) + 14 34 | 23 × 7 = 7 × __ 23 |
| 56 × 4 = 4 × __ 56 | 97 × 2 = 100 × 2 - __ × 2 3 |
| 11 + 11 = 11 + __ 11 | 99 × 5 = (100 - __) × 5 1 |
| 39 + 39 = 39 + __ 39 | (18 + 3) × 4 = 72 + __ 12 |
| 42 + 27 + 18 = (42 + __) + 18 27 | 45 + 48 + 27 = (45 + __) + 27 48 |
| 23 × 2 = 2 × __ 23 | (7 + 6) × 3 = 21 + __ 18 |