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