2 ÷
4
2
15 ×
1
5
3
2 -
3
1 -
4
5
2
2
4 ÷
1
1
5
5
1 -
2
3
4
15 ×
5
3
7 +
4
4 ÷
1
10 ×
2
1 -
2
1
3
4
5