20 ×
5
15 ×
3
4 ÷
4
1
3 ÷
6
2
4
5
6 ×
1
6
10 ×
2
12 ×
3
2 ÷
2
1
12 ×
6
12 ×
3
5
4
72 ×
3
6
2
4
1
30 ×
5
1
4
15 ×
5
30 ×
2
3
6
3 ÷
6
2
3
5
4 ÷
4
1