四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| (12 + 3) × 8 = 96 + __ | 97 × 3 = (100 - __) × 3 |
| 96 × 5 = (100 - __) × 5 | 80 × 5 = 5 × __ |
| 31 + 87 = 87 + __ | 98 × 9 = 100 × 9 - __ × 9 |
| 96 × 7 = 100 × 7 - __ × 7 | 97 × 2 = (100 - __) × 2 |
| (8 + 6) × 3 = 24 + __ | 97 × 7 = (100 - __) × 7 |
| 5 + 28 + 37 = (5 + __) + 37 | (17 + 1) × 3 = 51 + __ |
| 95 × 6 = (100 - __) × 6 | 61 + 86 = 86 + __ |
| 1 + 35 + 11 = (1 + __) + 11 | 2 + 16 + 28 = (2 + __) + 28 |
| 89 × 4 = 4 × __ | (11 + 19) × 8 = 88 + __ |
| 20 × 9 = 9 × __ | 10 + 37 = 37 + __ |
| 63 + 89 = 89 + __ | 86 + 53 = 53 + __ |
| 5 × 9 = 9 × __ | 10 + 13 + 10 = (10 + __) + 10 |
| (13 + 12) × 2 = 26 + __ | 37 × 9 = 9 × __ |
| 90 + 42 = 42 + __ | 36 + 14 + 15 = (36 + __) + 15 |
| 33 + 15 + 39 = (33 + __) + 39 | 99 × 4 = 100 × 4 - __ × 4 |
| 29 + 46 + 17 = (29 + __) + 17 | 99 × 6 = 100 × 6 - __ × 6 |
| 45 + 40 + 31 = (45 + __) + 31 | (11 + 13) × 4 = 44 + __ |
| 80 + 56 = 56 + __ | 98 × 5 = (100 - __) × 5 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| (12 + 3) × 8 = 96 + __ 24 | 97 × 3 = (100 - __) × 3 3 |
| 96 × 5 = (100 - __) × 5 4 | 80 × 5 = 5 × __ 80 |
| 31 + 87 = 87 + __ 31 | 98 × 9 = 100 × 9 - __ × 9 2 |
| 96 × 7 = 100 × 7 - __ × 7 4 | 97 × 2 = (100 - __) × 2 3 |
| (8 + 6) × 3 = 24 + __ 18 | 97 × 7 = (100 - __) × 7 3 |
| 5 + 28 + 37 = (5 + __) + 37 28 | (17 + 1) × 3 = 51 + __ 3 |
| 95 × 6 = (100 - __) × 6 5 | 61 + 86 = 86 + __ 61 |
| 1 + 35 + 11 = (1 + __) + 11 35 | 2 + 16 + 28 = (2 + __) + 28 16 |
| 89 × 4 = 4 × __ 89 | (11 + 19) × 8 = 88 + __ 152 |
| 20 × 9 = 9 × __ 20 | 10 + 37 = 37 + __ 10 |
| 63 + 89 = 89 + __ 63 | 86 + 53 = 53 + __ 86 |
| 5 × 9 = 9 × __ 5 | 10 + 13 + 10 = (10 + __) + 10 13 |
| (13 + 12) × 2 = 26 + __ 24 | 37 × 9 = 9 × __ 37 |
| 90 + 42 = 42 + __ 90 | 36 + 14 + 15 = (36 + __) + 15 14 |
| 33 + 15 + 39 = (33 + __) + 39 15 | 99 × 4 = 100 × 4 - __ × 4 1 |
| 29 + 46 + 17 = (29 + __) + 17 46 | 99 × 6 = 100 × 6 - __ × 6 1 |
| 45 + 40 + 31 = (45 + __) + 31 40 | (11 + 13) × 4 = 44 + __ 52 |
| 80 + 56 = 56 + __ 80 | 98 × 5 = (100 - __) × 5 2 |