| 序号 | 题目：2,8,12,12 | |
|---|---|---|
| 1 | 12 × ((12 − 8) − 2) | |
| 2 | 12 × (12 − (8 + 2)) | |
| 3 | 12 × ((12 − 2) − 8) | |
| 4 | (12 ÷ 2) × (12 − 8) | |
| 5 | (12 × (12 − 8)) ÷ 2 | |
| 6 | (12 × 12) ÷ (8 − 2) | |
| 7 | 12 × (8 − (12 ÷ 2)) | |
| 8 | 8 × (2 + (12 ÷ 12)) | |
| 9 | 12 × ((12 − 8) ÷ 2) | |
| 10 | 12 × (12 ÷ (8 − 2)) | |
| 11 | (12 − 8) ÷ (2 ÷ 12) | |
| 12 | 12 ÷ (2 ÷ (12 − 8)) | |
| 13 | 12 ÷ ((8 − 2) ÷ 12) | |
| 14 | 12 ÷ (2 − (12 ÷ 8)) | |