四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 33 + 16 + 5 = (33 + __) + 5 | 32 + 11 + 7 = (32 + __) + 7 |
| 19 + 8 + 11 = (19 + __) + 11 | 22 + 48 + 10 = (22 + __) + 10 |
| (3 + 15) × 9 = 27 + __ | 71 + 23 = 23 + __ |
| 29 + 55 = 55 + __ | 95 × 4 = 100 × 4 - __ × 4 |
| (6 + 2) × 4 = 24 + __ | 42 + 27 + 25 = (42 + __) + 25 |
| 96 × 4 = 100 × 4 - __ × 4 | 96 × 4 = 100 × 4 - __ × 4 |
| (5 + 19) × 9 = 45 + __ | 51 × 7 = 7 × __ |
| 45 + 77 = 77 + __ | 62 + 19 = 19 + __ |
| 98 × 6 = (100 - __) × 6 | 41 + 77 = 77 + __ |
| 47 + 11 + 49 = (47 + __) + 49 | (1 + 12) × 9 = 9 + __ |
| 10 × 2 = 2 × __ | 98 × 4 = 100 × 4 - __ × 4 |
| 69 × 2 = 2 × __ | 92 + 13 = 13 + __ |
| 95 + 63 = 63 + __ | (3 + 9) × 5 = 15 + __ |
| 98 × 6 = 100 × 6 - __ × 6 | (10 + 9) × 9 = 90 + __ |
| 33 + 31 + 48 = (33 + __) + 48 | (12 + 8) × 7 = 84 + __ |
| 71 × 4 = 4 × __ | (15 + 12) × 5 = 75 + __ |
| 17 + 44 + 23 = (17 + __) + 23 | 56 + 18 = 18 + __ |
| 11 × 4 = 4 × __ | 21 × 4 = 4 × __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 33 + 16 + 5 = (33 + __) + 5 16 | 32 + 11 + 7 = (32 + __) + 7 11 |
| 19 + 8 + 11 = (19 + __) + 11 8 | 22 + 48 + 10 = (22 + __) + 10 48 |
| (3 + 15) × 9 = 27 + __ 135 | 71 + 23 = 23 + __ 71 |
| 29 + 55 = 55 + __ 29 | 95 × 4 = 100 × 4 - __ × 4 5 |
| (6 + 2) × 4 = 24 + __ 8 | 42 + 27 + 25 = (42 + __) + 25 27 |
| 96 × 4 = 100 × 4 - __ × 4 4 | 96 × 4 = 100 × 4 - __ × 4 4 |
| (5 + 19) × 9 = 45 + __ 171 | 51 × 7 = 7 × __ 51 |
| 45 + 77 = 77 + __ 45 | 62 + 19 = 19 + __ 62 |
| 98 × 6 = (100 - __) × 6 2 | 41 + 77 = 77 + __ 41 |
| 47 + 11 + 49 = (47 + __) + 49 11 | (1 + 12) × 9 = 9 + __ 108 |
| 10 × 2 = 2 × __ 10 | 98 × 4 = 100 × 4 - __ × 4 2 |
| 69 × 2 = 2 × __ 69 | 92 + 13 = 13 + __ 92 |
| 95 + 63 = 63 + __ 95 | (3 + 9) × 5 = 15 + __ 45 |
| 98 × 6 = 100 × 6 - __ × 6 2 | (10 + 9) × 9 = 90 + __ 81 |
| 33 + 31 + 48 = (33 + __) + 48 31 | (12 + 8) × 7 = 84 + __ 56 |
| 71 × 4 = 4 × __ 71 | (15 + 12) × 5 = 75 + __ 60 |
| 17 + 44 + 23 = (17 + __) + 23 44 | 56 + 18 = 18 + __ 56 |
| 11 × 4 = 4 × __ 11 | 21 × 4 = 4 × __ 21 |