四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 45 + 16 = 16 + __ | 96 × 5 = 5 × __ |
| 99 × 2 = (100 - __) × 2 | 96 × 5 = (100 - __) × 5 |
| (14 + 2) × 4 = 56 + __ | 43 + 18 + 13 = (43 + __) + 13 |
| (20 + 15) × 3 = 60 + __ | 88 + 87 = 87 + __ |
| 28 + 52 = 52 + __ | 95 × 2 = (100 - __) × 2 |
| 80 × 9 = 9 × __ | 97 × 2 = 100 × 2 - __ × 2 |
| 25 + 25 + 36 = (25 + __) + 36 | 51 × 4 = 4 × __ |
| 11 + 7 + 37 = (11 + __) + 37 | 93 × 9 = 9 × __ |
| 96 × 9 = 100 × 9 - __ × 9 | (7 + 18) × 4 = 28 + __ |
| (18 + 5) × 3 = 54 + __ | 38 × 9 = 9 × __ |
| 98 × 3 = (100 - __) × 3 | 80 + 91 = 91 + __ |
| 23 + 17 + 26 = (23 + __) + 26 | 63 × 2 = 2 × __ |
| 65 × 8 = 8 × __ | 22 + 78 = 78 + __ |
| (7 + 19) × 2 = 14 + __ | (19 + 9) × 7 = 133 + __ |
| (15 + 2) × 8 = 120 + __ | 97 × 2 = 2 × __ |
| 99 + 84 = 84 + __ | 97 × 7 = 100 × 7 - __ × 7 |
| 10 + 4 + 23 = (10 + __) + 23 | 24 + 5 + 5 = (24 + __) + 5 |
| (2 + 5) × 6 = 12 + __ | 97 × 8 = (100 - __) × 8 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 45 + 16 = 16 + __ 45 | 96 × 5 = 5 × __ 96 |
| 99 × 2 = (100 - __) × 2 1 | 96 × 5 = (100 - __) × 5 4 |
| (14 + 2) × 4 = 56 + __ 8 | 43 + 18 + 13 = (43 + __) + 13 18 |
| (20 + 15) × 3 = 60 + __ 45 | 88 + 87 = 87 + __ 88 |
| 28 + 52 = 52 + __ 28 | 95 × 2 = (100 - __) × 2 5 |
| 80 × 9 = 9 × __ 80 | 97 × 2 = 100 × 2 - __ × 2 3 |
| 25 + 25 + 36 = (25 + __) + 36 25 | 51 × 4 = 4 × __ 51 |
| 11 + 7 + 37 = (11 + __) + 37 7 | 93 × 9 = 9 × __ 93 |
| 96 × 9 = 100 × 9 - __ × 9 4 | (7 + 18) × 4 = 28 + __ 72 |
| (18 + 5) × 3 = 54 + __ 15 | 38 × 9 = 9 × __ 38 |
| 98 × 3 = (100 - __) × 3 2 | 80 + 91 = 91 + __ 80 |
| 23 + 17 + 26 = (23 + __) + 26 17 | 63 × 2 = 2 × __ 63 |
| 65 × 8 = 8 × __ 65 | 22 + 78 = 78 + __ 22 |
| (7 + 19) × 2 = 14 + __ 38 | (19 + 9) × 7 = 133 + __ 63 |
| (15 + 2) × 8 = 120 + __ 16 | 97 × 2 = 2 × __ 97 |
| 99 + 84 = 84 + __ 99 | 97 × 7 = 100 × 7 - __ × 7 3 |
| 10 + 4 + 23 = (10 + __) + 23 4 | 24 + 5 + 5 = (24 + __) + 5 5 |
| (2 + 5) × 6 = 12 + __ 30 | 97 × 8 = (100 - __) × 8 3 |