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