

1. 
Find the GCF of 28 and 34. 


A. 
4 
B. 
7 


C. 
2 
D. 
1 


Hint 


2. 
Find the GCF of 16, 12, and 36. 


A. 
4 
B. 
2 


C. 
6 
D. 
3 


Hint 


3. 
Which two numbers have a GCF of 9? 


A. 
18, 36 
B. 
36, 45 


C. 
45, 95 
D. 
36, 39 


Hint 


4. 
Find the GCF of 32 and 42. 


A. 
4 
B. 
2 


C. 
14 
D. 
3 


Hint 


5. 
Find the GCF of 33, 48, and 54. 


A. 
1 
B. 
2 


C. 
3 
D. 
8 


Hint 

