3 ÷
1
7 +
5
2
2
15 ×
3
3 -
4
3
2
1 -
4
5
1
12 ×
4
3
5
3 +
1
2
2 ×
2
1
3 ÷
3
1 -
4
5
9 +
5
4
1
5 +
2
3