| 序号 | 题目:1,8,10,12 | |
|---|---|---|
| 1 | (12 × 1) × (10 − 8) | |
| 2 | (12 × (10 − 8)) × 1 | |
| 3 | 12 × ((10 × 1) − 8) | |
| 4 | 8 × ((12 + 1) − 10) | |
| 5 | 8 × ((12 − 10) + 1) | |
| 6 | 12 × (10 − (8 × 1)) | |
| 7 | 12 × ((10 − 8) × 1) | |
| 8 | 8 × (12 − (10 − 1)) | |
| 9 | (12 × (10 − 8)) ÷ 1 | |
| 10 | (12 ÷ 1) × (10 − 8) | |
| 11 | 12 × ((10 ÷ 1) − 8) | |
| 12 | 12 × (10 − (8 ÷ 1)) | |
| 13 | 12 × ((10 − 8) ÷ 1) | |
| 14 | (10 − 8) ÷ (1 ÷ 12) | |
| 15 | 12 ÷ (1 ÷ (10 − 8)) | |