四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| (9 + 17) × 6 = 54 + __ | 39 + 7 + 11 = (39 + __) + 11 |
| 34 × 7 = 7 × __ | 99 × 7 = 100 × 7 - __ × 7 |
| 73 + 73 = 73 + __ | 15 + 23 + 14 = (15 + __) + 14 |
| (14 + 10) × 8 = 112 + __ | 96 × 7 = 100 × 7 - __ × 7 |
| 99 × 4 = 100 × 4 - __ × 4 | 22 × 4 = 4 × __ |
| 96 × 7 = 100 × 7 - __ × 7 | 84 × 8 = 8 × __ |
| 96 × 4 = (100 - __) × 4 | 8 + 15 + 8 = (8 + __) + 8 |
| 17 + 1 + 38 = (17 + __) + 38 | (14 + 19) × 4 = 56 + __ |
| 12 × 5 = 5 × __ | 30 + 85 = 85 + __ |
| 98 + 92 = 92 + __ | 63 + 52 = 52 + __ |
| (6 + 3) × 2 = 12 + __ | 95 × 2 = 100 × 2 - __ × 2 |
| 87 + 46 = 46 + __ | 97 × 8 = 100 × 8 - __ × 8 |
| 73 × 5 = 5 × __ | 5 + 39 + 15 = (5 + __) + 15 |
| 35 + 28 + 22 = (35 + __) + 22 | 63 + 30 = 30 + __ |
| (14 + 15) × 9 = 126 + __ | (15 + 13) × 8 = 120 + __ |
| 48 + 17 + 14 = (48 + __) + 14 | 89 × 4 = 4 × __ |
| 4 + 9 + 21 = (4 + __) + 21 | 98 × 7 = 100 × 7 - __ × 7 |
| (14 + 1) × 3 = 42 + __ | (1 + 6) × 8 = 8 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| (9 + 17) × 6 = 54 + __ 102 | 39 + 7 + 11 = (39 + __) + 11 7 |
| 34 × 7 = 7 × __ 34 | 99 × 7 = 100 × 7 - __ × 7 1 |
| 73 + 73 = 73 + __ 73 | 15 + 23 + 14 = (15 + __) + 14 23 |
| (14 + 10) × 8 = 112 + __ 80 | 96 × 7 = 100 × 7 - __ × 7 4 |
| 99 × 4 = 100 × 4 - __ × 4 1 | 22 × 4 = 4 × __ 22 |
| 96 × 7 = 100 × 7 - __ × 7 4 | 84 × 8 = 8 × __ 84 |
| 96 × 4 = (100 - __) × 4 4 | 8 + 15 + 8 = (8 + __) + 8 15 |
| 17 + 1 + 38 = (17 + __) + 38 1 | (14 + 19) × 4 = 56 + __ 76 |
| 12 × 5 = 5 × __ 12 | 30 + 85 = 85 + __ 30 |
| 98 + 92 = 92 + __ 98 | 63 + 52 = 52 + __ 63 |
| (6 + 3) × 2 = 12 + __ 6 | 95 × 2 = 100 × 2 - __ × 2 5 |
| 87 + 46 = 46 + __ 87 | 97 × 8 = 100 × 8 - __ × 8 3 |
| 73 × 5 = 5 × __ 73 | 5 + 39 + 15 = (5 + __) + 15 39 |
| 35 + 28 + 22 = (35 + __) + 22 28 | 63 + 30 = 30 + __ 63 |
| (14 + 15) × 9 = 126 + __ 135 | (15 + 13) × 8 = 120 + __ 104 |
| 48 + 17 + 14 = (48 + __) + 14 17 | 89 × 4 = 4 × __ 89 |
| 4 + 9 + 21 = (4 + __) + 21 9 | 98 × 7 = 100 × 7 - __ × 7 2 |
| (14 + 1) × 3 = 42 + __ 3 | (1 + 6) × 8 = 8 + __ 48 |