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