40 ×
2
4
5
15 ×
3
1
10 ×
1
2
12 ×
3
20 ×
4
5
60 ×
3
5
4
1
6 ×
2
4
2 ÷
1
2
5
3
5
3 ÷
3
1
8 ×
2
4