Scroll down and select the greatest common factor. You have three minutes! mrnussbaum.com home | drills page | fractions page

12, 8
10, 8
6, 9
6, 12
4, 10
8, 14
12, 16
8, 24
10, 15
18, 20
16, 24
9, 24
6, 18
18, 28
9, 12
12, 42
8, 20
12, 20
16, 36
20, 32
15, 36
14, 49
12, 15
18, 33
9, 39
54, 24
24, 60
28, 48
84, 72
1