140×
13 +
13 +
3 ÷
11 +
15 +
10 ×
3 -
40 ×
144×
14 +
8
9 +
1
18 +
40 ×
22 +
13 +
6 ÷
8 +
2 ÷
1 -
3 -
280×
1 -