30 ×
6
5
2 ÷
4
2
18 ×
1
21 ×
3
7
5 ÷
5
1
21 ×
7
3
6
8 ×
2
20 ×
4
6 ×
3
8 ×
2
1
6
6
7
7
4
5
2
4
3
7 ÷
7
20 ×
5
6 ÷
1
3 ÷
6
7 ×
7
21 ×
3
30 ×
5
1
4
6
2
1
7
6
8 ×
4
2
15 ×
5
3
4
4
3 ÷
6
2
15 ×
5
3
7 ÷
7
1