四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 64 + 59 = 59 + __ | (16 + 7) × 8 = 128 + __ |
| 66 + 52 = 52 + __ | (3 + 13) × 3 = 9 + __ |
| 64 × 4 = 4 × __ | 16 + 42 + 11 = (16 + __) + 11 |
| 42 + 20 + 35 = (42 + __) + 35 | 47 + 18 + 5 = (47 + __) + 5 |
| 99 × 3 = 100 × 3 - __ × 3 | 92 × 8 = 8 × __ |
| 95 × 3 = 100 × 3 - __ × 3 | (14 + 2) × 2 = 28 + __ |
| 8 + 47 + 21 = (8 + __) + 21 | 97 × 4 = (100 - __) × 4 |
| 95 × 5 = 100 × 5 - __ × 5 | 88 + 33 = 33 + __ |
| 88 × 6 = 6 × __ | 42 + 27 = 27 + __ |
| 30 + 89 = 89 + __ | 79 × 9 = 9 × __ |
| 96 × 5 = 100 × 5 - __ × 5 | 71 + 81 = 81 + __ |
| 17 + 17 + 30 = (17 + __) + 30 | (3 + 15) × 2 = 6 + __ |
| 75 + 96 = 96 + __ | 67 + 95 = 95 + __ |
| 98 × 9 = 100 × 9 - __ × 9 | (18 + 13) × 9 = 162 + __ |
| 44 + 36 + 19 = (44 + __) + 19 | 34 + 36 + 39 = (34 + __) + 39 |
| (14 + 13) × 3 = 42 + __ | (6 + 9) × 4 = 24 + __ |
| 3 × 6 = 6 × __ | (11 + 5) × 9 = 99 + __ |
| 96 × 6 = 100 × 6 - __ × 6 | 48 + 49 + 27 = (48 + __) + 27 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 64 + 59 = 59 + __ 64 | (16 + 7) × 8 = 128 + __ 56 |
| 66 + 52 = 52 + __ 66 | (3 + 13) × 3 = 9 + __ 39 |
| 64 × 4 = 4 × __ 64 | 16 + 42 + 11 = (16 + __) + 11 42 |
| 42 + 20 + 35 = (42 + __) + 35 20 | 47 + 18 + 5 = (47 + __) + 5 18 |
| 99 × 3 = 100 × 3 - __ × 3 1 | 92 × 8 = 8 × __ 92 |
| 95 × 3 = 100 × 3 - __ × 3 5 | (14 + 2) × 2 = 28 + __ 4 |
| 8 + 47 + 21 = (8 + __) + 21 47 | 97 × 4 = (100 - __) × 4 3 |
| 95 × 5 = 100 × 5 - __ × 5 5 | 88 + 33 = 33 + __ 88 |
| 88 × 6 = 6 × __ 88 | 42 + 27 = 27 + __ 42 |
| 30 + 89 = 89 + __ 30 | 79 × 9 = 9 × __ 79 |
| 96 × 5 = 100 × 5 - __ × 5 4 | 71 + 81 = 81 + __ 71 |
| 17 + 17 + 30 = (17 + __) + 30 17 | (3 + 15) × 2 = 6 + __ 30 |
| 75 + 96 = 96 + __ 75 | 67 + 95 = 95 + __ 67 |
| 98 × 9 = 100 × 9 - __ × 9 2 | (18 + 13) × 9 = 162 + __ 117 |
| 44 + 36 + 19 = (44 + __) + 19 36 | 34 + 36 + 39 = (34 + __) + 39 36 |
| (14 + 13) × 3 = 42 + __ 39 | (6 + 9) × 4 = 24 + __ 36 |
| 3 × 6 = 6 × __ 3 | (11 + 5) × 9 = 99 + __ 45 |
| 96 × 6 = 100 × 6 - __ × 6 4 | 48 + 49 + 27 = (48 + __) + 27 49 |