3 ÷
1
3
20 ×
4
5
2 ×
2
6 ×
3
20 ×
4
10 ×
5
2
1
2
5
6 ×
3
3 ÷
1
20 ×
4
4 ×
4
1
2
3
5
10 ×
5
2
1
12 ×
4
3