11 +
28 ×
1 -
2
5 ×
16 +
72 ×
168×
12 ×
8
10 +
60 ×
3 -
15 +
3 ÷
14 +
9 +
24 ×
16 +
72 ×
8
12 ×
11 +
56 ×
6
4 ÷
2 -