| 序号 | 题目：2,3,10,12 | |
|---|---|---|
| 1 | ((12 × 3) − 2) − 10 | |
| 2 | ((12 × 3) − 10) − 2 | |
| 3 | ((10 × 2) − 12) × 3 | |
| 4 | ((10 + 2) × 3) − 12 | |
| 5 | (12 × 3) − (10 + 2) | |
| 6 | (10 × 2) + (12 ÷ 3) | |
| 7 | (12 × 10) ÷ (3 + 2) | |
| 8 | (10 × 3) − (12 ÷ 2) | |
| 9 | 12 × (10 ÷ (3 + 2)) | |
| 10 | 12 × ((10 ÷ 2) − 3) | |
| 11 | 12 ÷ ((3 + 2) ÷ 10) | |
| 12 | 10 × (12 ÷ (3 + 2)) | |
| 13 | 10 ÷ ((3 + 2) ÷ 12) | |