四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 76 + 32 = 32 + __ | (12 + 12) × 2 = 24 + __ |
| 47 × 2 = 2 × __ | 82 + 37 = 37 + __ |
| (15 + 3) × 3 = 45 + __ | 95 × 2 = 100 × 2 - __ × 2 |
| (8 + 19) × 8 = 64 + __ | (2 + 20) × 6 = 12 + __ |
| 35 + 64 = 64 + __ | 16 + 46 + 36 = (16 + __) + 36 |
| 32 + 90 = 90 + __ | 46 × 2 = 2 × __ |
| 16 + 45 + 37 = (16 + __) + 37 | 24 + 19 + 31 = (24 + __) + 31 |
| 98 × 8 = 8 × __ | 25 × 8 = 8 × __ |
| 47 + 68 = 68 + __ | 71 + 50 = 50 + __ |
| 88 + 35 = 35 + __ | (14 + 10) × 8 = 112 + __ |
| 97 × 5 = 100 × 5 - __ × 5 | 33 + 71 = 71 + __ |
| 93 + 89 = 89 + __ | 95 × 8 = (100 - __) × 8 |
| 99 × 6 = (100 - __) × 6 | 38 + 23 + 23 = (38 + __) + 23 |
| 43 + 1 + 45 = (43 + __) + 45 | 96 × 9 = 100 × 9 - __ × 9 |
| (11 + 9) × 4 = 44 + __ | 41 + 29 + 35 = (41 + __) + 35 |
| 6 × 2 = 2 × __ | 18 × 6 = 6 × __ |
| 12 + 16 + 33 = (12 + __) + 33 | 23 × 7 = 7 × __ |
| 99 × 2 = 100 × 2 - __ × 2 | 97 × 9 = (100 - __) × 9 |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 76 + 32 = 32 + __ 76 | (12 + 12) × 2 = 24 + __ 24 |
| 47 × 2 = 2 × __ 47 | 82 + 37 = 37 + __ 82 |
| (15 + 3) × 3 = 45 + __ 9 | 95 × 2 = 100 × 2 - __ × 2 5 |
| (8 + 19) × 8 = 64 + __ 152 | (2 + 20) × 6 = 12 + __ 120 |
| 35 + 64 = 64 + __ 35 | 16 + 46 + 36 = (16 + __) + 36 46 |
| 32 + 90 = 90 + __ 32 | 46 × 2 = 2 × __ 46 |
| 16 + 45 + 37 = (16 + __) + 37 45 | 24 + 19 + 31 = (24 + __) + 31 19 |
| 98 × 8 = 8 × __ 98 | 25 × 8 = 8 × __ 25 |
| 47 + 68 = 68 + __ 47 | 71 + 50 = 50 + __ 71 |
| 88 + 35 = 35 + __ 88 | (14 + 10) × 8 = 112 + __ 80 |
| 97 × 5 = 100 × 5 - __ × 5 3 | 33 + 71 = 71 + __ 33 |
| 93 + 89 = 89 + __ 93 | 95 × 8 = (100 - __) × 8 5 |
| 99 × 6 = (100 - __) × 6 1 | 38 + 23 + 23 = (38 + __) + 23 23 |
| 43 + 1 + 45 = (43 + __) + 45 1 | 96 × 9 = 100 × 9 - __ × 9 4 |
| (11 + 9) × 4 = 44 + __ 36 | 41 + 29 + 35 = (41 + __) + 35 29 |
| 6 × 2 = 2 × __ 6 | 18 × 6 = 6 × __ 18 |
| 12 + 16 + 33 = (12 + __) + 33 16 | 23 × 7 = 7 × __ 23 |
| 99 × 2 = 100 × 2 - __ × 2 1 | 97 × 9 = (100 - __) × 9 3 |