四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 46 + 64 = 64 + __ | 99 × 4 = (100 - __) × 4 |
| 46 + 60 = 60 + __ | (16 + 11) × 6 = 96 + __ |
| 37 + 13 + 16 = (37 + __) + 16 | (11 + 14) × 2 = 22 + __ |
| 80 + 43 = 43 + __ | 97 × 3 = (100 - __) × 3 |
| 95 × 8 = 100 × 8 - __ × 8 | 28 + 4 + 10 = (28 + __) + 10 |
| 4 + 1 + 1 = (4 + __) + 1 | 19 × 5 = 5 × __ |
| 49 + 83 = 83 + __ | 9 + 49 + 6 = (9 + __) + 6 |
| 19 + 50 + 44 = (19 + __) + 44 | 98 × 5 = (100 - __) × 5 |
| (13 + 20) × 4 = 52 + __ | 45 × 6 = 6 × __ |
| (15 + 5) × 5 = 75 + __ | 97 × 6 = 100 × 6 - __ × 6 |
| (17 + 10) × 3 = 51 + __ | 95 × 3 = (100 - __) × 3 |
| 31 × 7 = 7 × __ | 14 × 8 = 8 × __ |
| 67 + 31 = 31 + __ | 22 + 38 + 10 = (22 + __) + 10 |
| (3 + 18) × 5 = 15 + __ | (1 + 20) × 6 = 6 + __ |
| 98 × 9 = 100 × 9 - __ × 9 | 5 + 14 + 8 = (5 + __) + 8 |
| (12 + 16) × 3 = 36 + __ | 14 + 17 + 42 = (14 + __) + 42 |
| 21 + 74 = 74 + __ | 18 × 5 = 5 × __ |
| 87 + 54 = 54 + __ | 48 + 35 + 44 = (48 + __) + 44 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 46 + 64 = 64 + __ 46 | 99 × 4 = (100 - __) × 4 1 |
| 46 + 60 = 60 + __ 46 | (16 + 11) × 6 = 96 + __ 66 |
| 37 + 13 + 16 = (37 + __) + 16 13 | (11 + 14) × 2 = 22 + __ 28 |
| 80 + 43 = 43 + __ 80 | 97 × 3 = (100 - __) × 3 3 |
| 95 × 8 = 100 × 8 - __ × 8 5 | 28 + 4 + 10 = (28 + __) + 10 4 |
| 4 + 1 + 1 = (4 + __) + 1 1 | 19 × 5 = 5 × __ 19 |
| 49 + 83 = 83 + __ 49 | 9 + 49 + 6 = (9 + __) + 6 49 |
| 19 + 50 + 44 = (19 + __) + 44 50 | 98 × 5 = (100 - __) × 5 2 |
| (13 + 20) × 4 = 52 + __ 80 | 45 × 6 = 6 × __ 45 |
| (15 + 5) × 5 = 75 + __ 25 | 97 × 6 = 100 × 6 - __ × 6 3 |
| (17 + 10) × 3 = 51 + __ 30 | 95 × 3 = (100 - __) × 3 5 |
| 31 × 7 = 7 × __ 31 | 14 × 8 = 8 × __ 14 |
| 67 + 31 = 31 + __ 67 | 22 + 38 + 10 = (22 + __) + 10 38 |
| (3 + 18) × 5 = 15 + __ 90 | (1 + 20) × 6 = 6 + __ 120 |
| 98 × 9 = 100 × 9 - __ × 9 2 | 5 + 14 + 8 = (5 + __) + 8 14 |
| (12 + 16) × 3 = 36 + __ 48 | 14 + 17 + 42 = (14 + __) + 42 17 |
| 21 + 74 = 74 + __ 21 | 18 × 5 = 5 × __ 18 |
| 87 + 54 = 54 + __ 87 | 48 + 35 + 44 = (48 + __) + 44 35 |