四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 40 + 1 + 33 = (40 + __) + 33 | (6 + 10) × 3 = 18 + __ |
| 15 + 1 + 18 = (15 + __) + 18 | 96 × 9 = 100 × 9 - __ × 9 |
| 35 × 6 = 6 × __ | 98 × 9 = 100 × 9 - __ × 9 |
| 65 × 2 = 2 × __ | (6 + 14) × 3 = 18 + __ |
| 95 × 9 = (100 - __) × 9 | 35 + 45 + 47 = (35 + __) + 47 |
| 96 × 5 = 100 × 5 - __ × 5 | 67 × 3 = 3 × __ |
| (15 + 17) × 9 = 135 + __ | 1 + 6 + 36 = (1 + __) + 36 |
| 34 + 14 + 19 = (34 + __) + 19 | 97 × 2 = 100 × 2 - __ × 2 |
| 14 + 21 + 42 = (14 + __) + 42 | 74 × 9 = 9 × __ |
| 90 + 52 = 52 + __ | 98 × 5 = (100 - __) × 5 |
| 7 + 36 + 6 = (7 + __) + 6 | 11 + 30 + 1 = (11 + __) + 1 |
| (14 + 13) × 8 = 112 + __ | (14 + 15) × 7 = 98 + __ |
| 97 × 2 = 100 × 2 - __ × 2 | 97 × 6 = 6 × __ |
| 97 + 64 = 64 + __ | (6 + 3) × 7 = 42 + __ |
| 25 + 54 = 54 + __ | 21 + 43 + 6 = (21 + __) + 6 |
| 59 × 3 = 3 × __ | 70 + 53 = 53 + __ |
| 31 + 97 = 97 + __ | 96 × 5 = (100 - __) × 5 |
| (17 + 12) × 8 = 136 + __ | 90 × 7 = 7 × __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 40 + 1 + 33 = (40 + __) + 33 1 | (6 + 10) × 3 = 18 + __ 30 |
| 15 + 1 + 18 = (15 + __) + 18 1 | 96 × 9 = 100 × 9 - __ × 9 4 |
| 35 × 6 = 6 × __ 35 | 98 × 9 = 100 × 9 - __ × 9 2 |
| 65 × 2 = 2 × __ 65 | (6 + 14) × 3 = 18 + __ 42 |
| 95 × 9 = (100 - __) × 9 5 | 35 + 45 + 47 = (35 + __) + 47 45 |
| 96 × 5 = 100 × 5 - __ × 5 4 | 67 × 3 = 3 × __ 67 |
| (15 + 17) × 9 = 135 + __ 153 | 1 + 6 + 36 = (1 + __) + 36 6 |
| 34 + 14 + 19 = (34 + __) + 19 14 | 97 × 2 = 100 × 2 - __ × 2 3 |
| 14 + 21 + 42 = (14 + __) + 42 21 | 74 × 9 = 9 × __ 74 |
| 90 + 52 = 52 + __ 90 | 98 × 5 = (100 - __) × 5 2 |
| 7 + 36 + 6 = (7 + __) + 6 36 | 11 + 30 + 1 = (11 + __) + 1 30 |
| (14 + 13) × 8 = 112 + __ 104 | (14 + 15) × 7 = 98 + __ 105 |
| 97 × 2 = 100 × 2 - __ × 2 3 | 97 × 6 = 6 × __ 97 |
| 97 + 64 = 64 + __ 97 | (6 + 3) × 7 = 42 + __ 21 |
| 25 + 54 = 54 + __ 25 | 21 + 43 + 6 = (21 + __) + 6 43 |
| 59 × 3 = 3 × __ 59 | 70 + 53 = 53 + __ 70 |
| 31 + 97 = 97 + __ 31 | 96 × 5 = (100 - __) × 5 4 |
| (17 + 12) × 8 = 136 + __ 96 | 90 × 7 = 7 × __ 90 |