

1. 
Based on the factor trees, what is the greatest common factor of 8 and 20? 


A. 
4 
B. 
2 


C. 
8 
D. 
20 


Hint 


2. 
What is the greatest common factor of 36 and 45? 


A. 
3 
B. 
9 


C. 
36 
D. 
45 


Hint 


3. 
George wants to resurface the table below with ceramic tiles. What is the largest square tile that he can use without having to cut any tiles? 





A. 
6 inches on each side 
B. 
12 inches on each side 


C. 
4 inches on each side 
D. 
8 inches on each side 


Hint 


4. 
What is the greatest common factor of 36, 54, and 90. 


A. 
18 
B. 
6 


C. 
36 
D. 
9 


Hint 


5. 
What is the greatest common factor of 14p^{2}q and 42p^{3}q^{2}? 


A. 
7pq 
B. 
14p^{2}q 


C. 
7p^{2}q^{2} 
D. 
14pq 


Hint 


