12 ×
3
4
10 ×
1
5
2
2 ÷
4
1
10 ×
5
2
15 ×
3
2
15 ×
3
2 ÷
4
1
1
5
5 ÷
1
5
2
12 ×
3
4
5
6 ×
2
3
4 ÷
4
1