Greatest Common Factor (GCF)

Front

What is the Greatest Common Factor (GCF)?

Back

The GCF is the largest positive integer that divides all the given numbers without leaving a remainder.

Front

How do you find the GCF of two numbers?

Back

List the factors of each number and identify the largest factor that appears in both lists.

Front

What are factors?

Back

Factors are numbers that can be multiplied together to get another number.

Front

Find the GCF of 8 and 20.

Back

4

Front

List the common factors of 6 and 8.

Back

1, 2

Front

What is the greatest factor of 28 and 49?

Back

7

Front

Find the GCF of 8, 10, 12, and 20.

Back

2

Front

What is the GCF of 10 and 20?

Back

10

Front

If the GCF of two numbers is 1, what does that mean?

Back

It means the two numbers are coprime, having no common factors other than 1.

Front

What is the relationship between GCF and LCM (Least Common Multiple)?

Back

The product of the GCF and LCM of two numbers is equal to the product of the numbers.