
Directions: Answer these questions pertaining to common factors. The cartoon people may, or may not, be helpful!!
1. 
What is the greatest common factor (GCF) of
30 and 45?



2. 
What is the greatest common factor (GCF) of 7 and 15?



3. 
What is the greatest common factor (GCF) for 9, 21, and 63?



4. 
What is the least common multiple (LCM) for 2, 4 and 9?



5. 
Two numbers have a greatest common factor of 8, and a least common multiple of 48. If one of the numbers is 16, what is the other number?



6. 
What are the common factors of 15 and 45?



7. 
Use the distributive property to find the greatest common factor in the expression 6x + 18.



8. 
Factor using the distributive property to find the greatest common factor:
0.33m + 0.99



9. 
What are the factors of 121?



10. 
Which of the following expressions is (are) NOT equivalent to
6x + 12y? (Check all that apply, and hit SUBMIT!) 



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