1. Greatest Common Factor GCF
Intro to Algebra

2. List the Factors of 12 and 16

3. Trick to Finding the GCF
Find the GCF of 16 and 12
Find the Prime Factorization of 16 and 12
Use all the factors the numbers have in common

4. Find the GCF of 12 and 30

5. Find the GCF of 9 and 12

6. Find the GCF of 6 and 18

7. Find the GCF of 24 and 108

8. Find the GCF of 16 and 45

9. GCF
After finding the prime factorization of two numbers, and seeing that there are no common prime factors; the GCF is 1

10. GCF of 15, 30, and 105

11. GCF of 180, 225, and 270