四年级下册 运算律（笔算）
姓名：_______________
学号：_______________
用时：_______________
| 96 × 4 = 100 × 4 - __ × 4 | 13 + 42 + 32 = (13 + __) + 32 |
| 88 × 8 = 8 × __ | 28 + 34 = 34 + __ |
| 72 × 8 = 8 × __ | 99 × 3 = (100 - __) × 3 |
| (14 + 15) × 8 = 112 + __ | 24 + 96 = 96 + __ |
| 34 + 31 = 31 + __ | (18 + 9) × 8 = 144 + __ |
| 3 + 25 + 48 = (3 + __) + 48 | (1 + 16) × 3 = 3 + __ |
| 62 + 16 = 16 + __ | 96 × 7 = 100 × 7 - __ × 7 |
| 42 + 48 + 18 = (42 + __) + 18 | (13 + 9) × 3 = 39 + __ |
| 19 + 3 + 37 = (19 + __) + 37 | (11 + 11) × 5 = 55 + __ |
| 99 × 3 = 100 × 3 - __ × 3 | 24 + 47 + 41 = (24 + __) + 41 |
| 14 + 10 = 10 + __ | 25 + 31 + 1 = (25 + __) + 1 |
| (12 + 14) × 5 = 60 + __ | (9 + 14) × 9 = 81 + __ |
| 25 + 38 = 38 + __ | 22 + 47 + 6 = (22 + __) + 6 |
| 82 × 7 = 7 × __ | 28 + 2 + 19 = (28 + __) + 19 |
| 82 × 2 = 2 × __ | 43 + 2 + 15 = (43 + __) + 15 |
| 99 × 4 = (100 - __) × 4 | 99 × 3 = 100 × 3 - __ × 3 |
| (18 + 20) × 5 = 90 + __ | (9 + 6) × 7 = 63 + __ |
| 88 × 8 = 8 × __ | (14 + 4) × 8 = 112 + __ |
四年级下册 运算律（笔算）（答案）
姓名：_______________
学号：_______________
用时：_______________
| 96 × 4 = 100 × 4 - __ × 4 4 | 13 + 42 + 32 = (13 + __) + 32 42 |
| 88 × 8 = 8 × __ 88 | 28 + 34 = 34 + __ 28 |
| 72 × 8 = 8 × __ 72 | 99 × 3 = (100 - __) × 3 1 |
| (14 + 15) × 8 = 112 + __ 120 | 24 + 96 = 96 + __ 24 |
| 34 + 31 = 31 + __ 34 | (18 + 9) × 8 = 144 + __ 72 |
| 3 + 25 + 48 = (3 + __) + 48 25 | (1 + 16) × 3 = 3 + __ 48 |
| 62 + 16 = 16 + __ 62 | 96 × 7 = 100 × 7 - __ × 7 4 |
| 42 + 48 + 18 = (42 + __) + 18 48 | (13 + 9) × 3 = 39 + __ 27 |
| 19 + 3 + 37 = (19 + __) + 37 3 | (11 + 11) × 5 = 55 + __ 55 |
| 99 × 3 = 100 × 3 - __ × 3 1 | 24 + 47 + 41 = (24 + __) + 41 47 |
| 14 + 10 = 10 + __ 14 | 25 + 31 + 1 = (25 + __) + 1 31 |
| (12 + 14) × 5 = 60 + __ 70 | (9 + 14) × 9 = 81 + __ 126 |
| 25 + 38 = 38 + __ 25 | 22 + 47 + 6 = (22 + __) + 6 47 |
| 82 × 7 = 7 × __ 82 | 28 + 2 + 19 = (28 + __) + 19 2 |
| 82 × 2 = 2 × __ 82 | 43 + 2 + 15 = (43 + __) + 15 2 |
| 99 × 4 = (100 - __) × 4 1 | 99 × 3 = 100 × 3 - __ × 3 1 |
| (18 + 20) × 5 = 90 + __ 100 | (9 + 6) × 7 = 63 + __ 42 |
| 88 × 8 = 8 × __ 88 | (14 + 4) × 8 = 112 + __ 32 |