90 ×
3
12 ×
6
2
1
28 ×
7
4
5
5
6
5
28 ×
4
6 ×
2
3
7 ÷
7
1
3 ÷
1
3
7
140×
5
48 ×
4
6
2
20 ×
5
4
1
7
30 ×
2
3
2 ÷
6
28 ×
7
2 ÷
2
6
6
4
1
5
3
4
1
2 ÷
3
6
70 ×
5
2
7
2
2
35 ×
7
5
18 ×
3
6
4 ÷
1
4