15 ×
1
1890×
5
7
2 ÷
8
4
54 ×
6
9
6 ×
3
2
5
6
9
147×
7
3
288×
4
4 ÷
2
8
6 ×
1
3
8
8
5 ×
1
5
7
9
4
2
6
72 ×
9
54 ×
3
2
24 ×
4
2 ÷
1
168×
8
30 ×
5
6
35 ×
7
8
9
4
4
6
2
7
3
1
5
336×
6
7
144×
8
108×
2
9
15 ×
3
8 ÷
1
180×
5
36 ×
4
56 ×
7
2
3
1
6
5
8
4
9
2
4
6
135×
3
5 ×
5
1
42 ×
7
9
8
8
4
1
1
5
9
4 ÷
8
2
6
21 ×
7
3