以下都是：
1: (2 × (6 + 10)) - 8
2: 2 × (6 + 10) - 8
3: 2 × (6 × (10 - 8))
4: 2 × 6 ×(10 - 8)
5: (2 × 6) × (10 - 8)
6: (2 - 8) × (6 - 10)
7: 2 × (8 - 6 + 10)
8: 2 × ((8 - 6) + 10)
9: 2 × (8 - (6 - 10))
10: (2 - 8 + 10) × 6
11: ((2 - 8) + 10) × 6
12: (2 - (8 - 10)) × 6
13: 2 × (8 + 10 - 6)
14: 2 × ((8 + 10) - 6)
15: 2 × (8 + (10 - 6))
16: (2 × (10 + 6)) - 8
17: 2 × (10 + 6) - 8
18: 2 × (10 - 6 + 8)
19: 2 × ((10 - 6) + 8)
20: 2 × (10 - (6 - 8))
21: (2 + 10 - 8) × 6
22: ((2 + 10) - 8) × 6
23: (2 + (10 - 8)) × 6
24: (2 + 10) × (8 - 6)
25: 2 × (10 + 8 - 6)
26: 2 × ((10 + 8) - 6)
27: 2 × (10 + (8 - 6))
28: (2 × (10 - 8)) × 6
29: 2 × (10 - 8) × 6
30: 2 × ((10 - 8) × 6)
31: 6 × (2 - 8 + 10)
32: 6 × ((2 - 8) + 10)
33: 6 × (2 - (8 - 10))
34: 6 × (2 + 10 - 8)
35: 6 × ((2 + 10) - 8)
36: 6 × (2 + (10 - 8))
37: 6 × (2 × (10 - 8))
38: 6 × 2 ×(10 - 8)
39: (6 × 2) × (10 - 8)
40: (6 + 10) × 2 - 8
41: ((6 + 10) × 2) - 8
42: (6 - 10) × (2 - 8)
43: 6 × (10 + 2 - 8)
44: 6 × ((10 + 2) - 8)
45: 6 × (10 + (2 - 8))
46: 6 × (10 - 8 + 2)
47: 6 × ((10 - 8) + 2)
48: 6 × (10 - (8 - 2))
49: (6 × (10 - 8)) × 2
50: 6 × (10 - 8) × 2
51: 6 × ((10 - 8) × 2)
52: (8 - 2) × (10 - 6)
53: 8 ÷ (2 - 10 ÷ 6)
54: 8 ÷ (2 - (10 ÷ 6))
55: (8 - 6) × (2 + 10)
56: (8 - 6 + 10) × 2
57: ((8 - 6) + 10) × 2
58: (8 - (6 - 10)) × 2
59: (8 - 6) × (10 + 2)
60: (8 + 10 - 6) × 2
61: ((8 + 10) - 6) × 2
62: (8 + (10 - 6)) × 2
63: (10 + 2 - 8) × 6
64: ((10 + 2) - 8) × 6
65: (10 + (2 - 8)) × 6
66: (10 + 2) × (8 - 6)
67: (10 + 6) × 2 - 8
68: ((10 + 6) × 2) - 8
69: (10 - 6 + 8) × 2
70: ((10 - 6) + 8) × 2
71: (10 - (6 - 8)) × 2
72: (10 - 6) × (8 - 2)
73: (10 - 8 + 2) × 6
74: ((10 - 8) + 2) × 6
75: (10 - (8 - 2)) × 6
76: (10 - 8) × 2 × 6
77: ((10 - 8) × 2) × 6
78: (10 - 8) × (2 × 6)
79: (10 + 8 - 6) × 2
80: ((10 + 8) - 6) × 2
81: (10 + (8 - 6)) × 2
82: (10 - 8) × 6 × 2
83: ((10 - 8) × 6) × 2
84: (10 - 8) × (6 × 2)
（望采纳,谢谢）
O(∩_∩)O