1.
Look at the factors of 18 and 30. What is the greatest common factor?
factors of 18: 1, 2, 3, 6, 9, 18
factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
A.
5
B.
6
C.
2
D.
3
Hint
2.
Find the GCF of 24 and 54.
A.
12
B.
6
C.
2
D.
3
Hint
3.
Find the GCF of 16, 12, and 36.
A.
3
B.
4
C.
6
D.
2
Hint
4.
Which two numbers have a GCF of 9?
A.
36, 39
B.
45, 95
C.
18, 36
D.
36, 45
Hint
5.
Which two numbers have a GCF of 7?
A.
21, 63
B.
7, 17
C.
25, 45
D.
35, 126
Hint