Greatest Common Factor

What is the greatest common factor of 15 and 30?

What is the greatest common factor of 4 and 16?

• 4

• 2

• 1

• 16

What is the greatest common factor of 35 and 47?

• 5

• 7

• 1

• 8

List the common factors of 12 and 24 in order from least to greatest separatd by a comma.

What is the GCF of 18 and 36?

What is the GCF of 21 and 49?

What is the Greatest Common Factor of 12 and 48?

• 6

• 12

• 4

• 16

What is the Greatest Common Factor of 35 and 42?

• 5

• 14

• 7

• 3

GCF of 16 and 18

• 4

• 2

• 6

• 8

What is the greatest common factor of 48 and 64?