四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 87 × 6 = 6 × __ | 93 + 34 = 34 + __ |
| 99 + 21 = 21 + __ | (16 + 8) × 7 = 112 + __ |
| (4 + 13) × 6 = 24 + __ | 97 × 6 = 100 × 6 - __ × 6 |
| 34 + 21 = 21 + __ | 33 + 27 + 10 = (33 + __) + 10 |
| 24 + 45 + 2 = (24 + __) + 2 | (17 + 2) × 3 = 51 + __ |
| (9 + 19) × 4 = 36 + __ | (3 + 13) × 2 = 6 + __ |
| 36 + 37 + 49 = (36 + __) + 49 | 94 + 79 = 79 + __ |
| 73 × 2 = 2 × __ | 45 + 25 = 25 + __ |
| 10 + 7 + 29 = (10 + __) + 29 | 38 + 34 + 50 = (38 + __) + 50 |
| 62 + 42 = 42 + __ | 39 + 58 = 58 + __ |
| 49 + 36 + 25 = (49 + __) + 25 | 96 × 9 = (100 - __) × 9 |
| 95 × 8 = 100 × 8 - __ × 8 | 11 × 8 = 8 × __ |
| 89 × 3 = 3 × __ | (8 + 3) × 3 = 24 + __ |
| 19 × 9 = 9 × __ | 67 × 4 = 4 × __ |
| 95 × 6 = (100 - __) × 6 | 88 + 66 = 66 + __ |
| 97 × 9 = (100 - __) × 9 | 98 × 3 = (100 - __) × 3 |
| 27 + 5 + 40 = (27 + __) + 40 | (16 + 16) × 4 = 64 + __ |
| 97 × 4 = 4 × __ | 94 × 4 = 4 × __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 87 × 6 = 6 × __ 87 | 93 + 34 = 34 + __ 93 |
| 99 + 21 = 21 + __ 99 | (16 + 8) × 7 = 112 + __ 56 |
| (4 + 13) × 6 = 24 + __ 78 | 97 × 6 = 100 × 6 - __ × 6 3 |
| 34 + 21 = 21 + __ 34 | 33 + 27 + 10 = (33 + __) + 10 27 |
| 24 + 45 + 2 = (24 + __) + 2 45 | (17 + 2) × 3 = 51 + __ 6 |
| (9 + 19) × 4 = 36 + __ 76 | (3 + 13) × 2 = 6 + __ 26 |
| 36 + 37 + 49 = (36 + __) + 49 37 | 94 + 79 = 79 + __ 94 |
| 73 × 2 = 2 × __ 73 | 45 + 25 = 25 + __ 45 |
| 10 + 7 + 29 = (10 + __) + 29 7 | 38 + 34 + 50 = (38 + __) + 50 34 |
| 62 + 42 = 42 + __ 62 | 39 + 58 = 58 + __ 39 |
| 49 + 36 + 25 = (49 + __) + 25 36 | 96 × 9 = (100 - __) × 9 4 |
| 95 × 8 = 100 × 8 - __ × 8 5 | 11 × 8 = 8 × __ 11 |
| 89 × 3 = 3 × __ 89 | (8 + 3) × 3 = 24 + __ 9 |
| 19 × 9 = 9 × __ 19 | 67 × 4 = 4 × __ 67 |
| 95 × 6 = (100 - __) × 6 5 | 88 + 66 = 66 + __ 88 |
| 97 × 9 = (100 - __) × 9 3 | 98 × 3 = (100 - __) × 3 2 |
| 27 + 5 + 40 = (27 + __) + 40 5 | (16 + 16) × 4 = 64 + __ 64 |
| 97 × 4 = 4 × __ 97 | 94 × 4 = 4 × __ 94 |