四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| (20 + 20) × 8 = 160 + __ | 96 × 8 = (100 - __) × 8 |
| 94 + 36 = 36 + __ | 98 × 6 = (100 - __) × 6 |
| 50 + 18 + 37 = (50 + __) + 37 | 13 + 49 + 37 = (13 + __) + 37 |
| 22 + 14 + 45 = (22 + __) + 45 | 99 × 5 = 100 × 5 - __ × 5 |
| 25 + 25 + 9 = (25 + __) + 9 | 95 × 8 = 100 × 8 - __ × 8 |
| 18 + 41 + 11 = (18 + __) + 11 | 99 × 5 = (100 - __) × 5 |
| 99 × 2 = 100 × 2 - __ × 2 | 40 + 27 + 4 = (40 + __) + 4 |
| (2 + 17) × 6 = 12 + __ | 57 × 5 = 5 × __ |
| 97 × 3 = (100 - __) × 3 | 52 + 98 = 98 + __ |
| (9 + 8) × 2 = 18 + __ | 52 + 88 = 88 + __ |
| 68 + 64 = 64 + __ | (18 + 7) × 7 = 126 + __ |
| 3 × 2 = 2 × __ | 23 + 68 = 68 + __ |
| 40 + 84 = 84 + __ | 26 + 1 + 37 = (26 + __) + 37 |
| 97 + 72 = 72 + __ | 72 × 3 = 3 × __ |
| 73 × 4 = 4 × __ | 34 + 10 + 44 = (34 + __) + 44 |
| (14 + 19) × 8 = 112 + __ | 69 + 47 = 47 + __ |
| 91 + 58 = 58 + __ | 42 + 12 + 10 = (42 + __) + 10 |
| (10 + 5) × 7 = 70 + __ | 69 × 5 = 5 × __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| (20 + 20) × 8 = 160 + __ 160 | 96 × 8 = (100 - __) × 8 4 |
| 94 + 36 = 36 + __ 94 | 98 × 6 = (100 - __) × 6 2 |
| 50 + 18 + 37 = (50 + __) + 37 18 | 13 + 49 + 37 = (13 + __) + 37 49 |
| 22 + 14 + 45 = (22 + __) + 45 14 | 99 × 5 = 100 × 5 - __ × 5 1 |
| 25 + 25 + 9 = (25 + __) + 9 25 | 95 × 8 = 100 × 8 - __ × 8 5 |
| 18 + 41 + 11 = (18 + __) + 11 41 | 99 × 5 = (100 - __) × 5 1 |
| 99 × 2 = 100 × 2 - __ × 2 1 | 40 + 27 + 4 = (40 + __) + 4 27 |
| (2 + 17) × 6 = 12 + __ 102 | 57 × 5 = 5 × __ 57 |
| 97 × 3 = (100 - __) × 3 3 | 52 + 98 = 98 + __ 52 |
| (9 + 8) × 2 = 18 + __ 16 | 52 + 88 = 88 + __ 52 |
| 68 + 64 = 64 + __ 68 | (18 + 7) × 7 = 126 + __ 49 |
| 3 × 2 = 2 × __ 3 | 23 + 68 = 68 + __ 23 |
| 40 + 84 = 84 + __ 40 | 26 + 1 + 37 = (26 + __) + 37 1 |
| 97 + 72 = 72 + __ 97 | 72 × 3 = 3 × __ 72 |
| 73 × 4 = 4 × __ 73 | 34 + 10 + 44 = (34 + __) + 44 10 |
| (14 + 19) × 8 = 112 + __ 152 | 69 + 47 = 47 + __ 69 |
| 91 + 58 = 58 + __ 91 | 42 + 12 + 10 = (42 + __) + 10 12 |
| (10 + 5) × 7 = 70 + __ 35 | 69 × 5 = 5 × __ 69 |