28 ×
4
40 ×
5
8
21 ×
7
6 ×
2
3
6 ÷
6
1
7
2
2
100×
1
3
48 ×
6
10 ×
5
2 ÷
8
4
2 ÷
6
42 ×
7
5
4
8
2
1
3
3
3
6
4
4
5
7 ÷
7
1
64 ×
2
8
4 ÷
2
126×
1
6
168×
8
3
7
4
10 ×
5
8
3
7
2 ×
1
4 ÷
4
30 ×
6
5
2
20 ×
5
4
3
3
2
1
8
8
21 ×
7
42 ×
6
8 ÷
1
8
3 ÷
2
6
20 ×
5
4
3
7