Greatest Common Factor

Multiples of 5 and 10

100

List the factors of 5 and 10.

What is the greatest common factor?

5

200

What are the factors of 25 and 30?

Tell what the greatest common factor is. 

5

300

What is the GCF of the pair 30 and 40

10

Multiples of 2

100

What are the factors of 20 and 16?

What is the greatest common factor? 

4

200

What are the factors of 24 and 16?

Tell the GCF of the pair.  

8

300

Tell the GCF for the pair 22 and 24.

2

Multiples of 7

100

What are factors of 7 and 14? 

What is the greatest common factor? 7

7

200

List the factors of 14 and 35.

What is the GCF for the pair? 

7

300

What is the GCF for the pair 14 and 28?

14

Multiples of 9

100

List the factors of 18 and 27.

What is the greatest common factor? 

9

200

What are the factors of 27 and 36?

Tell what the GCF of the pair is. 

9

300

What is the GCF for the pair 18 and 36?

18