3 ÷
9 +
210×
19 +
90 ×
10 ×
8
4 ÷
7 +
7
1 -
4
2 ÷
17 +
6 ÷
6 ×
16 +
7
5 -
12 ×
7 +
80 ×
8 ÷
1 -
15 +
1
12 +
1 -
4 -