4 ÷
4
2 ×
1
15 ×
3
10 ×
5
2
1
2
5
12 ×
3
4 ÷
4
30 ×
5
3
2
4
1
12 ×
3
4
2 ÷
1
2
15 ×
5
10 ×
2
5
4 ×
4
1
3