28 ×
4
14 ×
2
7
2 ÷
3
6
5 ÷
1
5
7
5 ÷
5
180×
6
1
1
21 ×
3
2 ÷
2
4
6 ×
6
1
2
2 ÷
4
7
90 ×
5
3
1
3
5
2
56 ×
4
7
6
30 ×
5
42 ×
6
84 ×
3
7
2
4 ÷
4
1
3
7
4
5
5
6 ÷
1
6
2
2
2
4 ÷
4
1
30 ×
6
5
21 ×
3
7