Greatest Common Factor

Find the GCF of 40 and 56 using lists.

• 8

• 14

• 10

• 4

Find the GCF of 42 and 63 using the ladder method.

• 21

• 28

• 14

• 7

Find the GCF of 35 and 45 using Venn diagrams.

• 10

• 15

• 7

• 5

Find the GCF of 30 and 45 using lists.

• 25

• 20

• 15

• 10

Find the GCF of 36 and 48 using the ladder method.

• 6

• 12

• 18

• 24

Find the GCF of 16 and 24 using lists.

• 12

• 4

• 8

• 20

Greatest common factor of 10 and 20

• 5

• 2

• 10

What is the GCF of 18k and 15k³

• 3k²

• 3k³

• 3k

• 5k

Find the greatest common factor of 210 and 90

Find the greatest common factor of 21 and 28