3 4 12 10 算24

（10-4）×12/3

3*4*（12-10）

1: 4 - 2 + 12 + 10
2: (4 - 2) + 12 + 10
3: (4 - 2 + 12) + 10
4: ((4 - 2) + 12) + 10
5: 4 - 2 +(12 + 10)
6: (4 - 2) + (12 + 10)
7: (4 - (2 - 12)) + 10
8: 4 - (2 - 12) + 10
9: 4 - (2 - (12 + 10))
10: 4 - (2 - 12 - 10)
11: 4 - ((2 - 12) - 10)
12: 4 ÷ 2 + 12 + 10
13: (4 ÷ 2) + 12 + 10
14: (4 ÷ 2 + 12) + 10
15: ((4 ÷ 2) + 12) + 10
16: 4 ÷ 2 +(12 + 10)
17: (4 ÷ 2) + (12 + 10)
18: 4 - 2 + 10 + 12
19: (4 - 2) + 10 + 12
20: (4 - 2 + 10) + 12
21: ((4 - 2) + 10) + 12
22: 4 - 2 +(10 + 12)
23: (4 - 2) + (10 + 12)
24: (4 - (2 - 10)) + 12
25: 4 - (2 - 10) + 12
26: 4 - (2 - (10 + 12))
27: 4 - (2 - 10 - 12)
28: 4 - ((2 - 10) - 12)
29: 4 ÷ 2 + 10 + 12
30: (4 ÷ 2) + 10 + 12
31: (4 ÷ 2 + 10) + 12
32: ((4 ÷ 2) + 10) + 12
33: 4 ÷ 2 +(10 + 12)
34: (4 ÷ 2) + (10 + 12)
35