Exploring the Greatest Common Factor in Pre-Algebra

What is the Greatest Common Factor (GCF) of 39 and 6?

• 1

• 2

• 3

• 6

Which of the following is the GCF of 24 and 28?

• 2

• 4

• 8

• 6

What is the GCF of 40 and 10?

• 5

• 20

• 2

• 10

For the numbers 30 and 39, what is the GCF when considering the variable V?

• V

• 3V

• 3

• 30V

What is the GCF of 35n²m and 21m²n?

• 7m²n

• 7n²m

• 7nm

• 21nm

What is the GCF of 30y³ and 20y²?

• 10y

• 20y²

• 20y

• 10y²

What is the GCF of 54 and 27?

• 9

• 18

• 27

• 54

What is the GCF of 18y² and 54y²?

• 18y²

• 54y²

• 18y

• 54y

What is the GCF of 30, 75, and 105?

• 5

• 10

• 15

• 20

What is the GCF of 80, 100, 40, and 140?

• 20

• 80

• 10

• 40