18 +
30 ×
9
672×
21 +
16 ×
15 +
40 ×
10 +
14 +
8 ÷
224×
6
16 +
3 ÷
6
5 -
16 +
13 +
12 ×
6 +
60 ×
630×
17 +
8
10 +
10 +
24 +
7 +
4
3 ÷
15 +
1 -