1: (10 + 10) ÷ 5 × 6
2: ((10 + 10) ÷ 5) × 6
3: (10 + 10) ÷ (5 ÷ 6)
4: (10 + 10) × 6 ÷ 5
5: ((10 + 10) × 6) ÷ 5
6: (10 + 10) × (6 ÷ 5)
7: (5 - 10 ÷ 10) × 6
8: (5 - (10 ÷ 10)) × 6
9: (6 × (10 + 10)) ÷ 5
10: 6 × (10 + 10) ÷ 5
11: 6 × ((10 + 10) ÷ 5)
12: 6 × (5 - 10 ÷ 10)
13: 6 × (5 - (10 ÷ 10))
14: 6 ÷ 5 ×(10 + 10)
15: (6 ÷ 5) × (10 + 10)
16: 6 ÷ (5 ÷ (10 + 10))