Front

What is the Greatest Common Factor (GCF)?

Back

The GCF is the largest number that divides two or more numbers without leaving a remainder.

Front

How do you find the GCF of two numbers?

Back

To find the GCF, list the factors of each number and identify the largest factor they have in common.

Front

What are factors?

Back

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

Front

Find the GCF of 9 and 27.

Back

9

Front

Find the GCF of 18 and 24.

Back

6

Front

Find the GCF of 10 and 50.

Back

10

Front

Find the GCF of 32 and 64.

Back

32

Front

Find the GCF of 12 and 27.

Back

3

Front

What is the GCF of two prime numbers?

Back

The GCF of two prime numbers is always 1, since they have no common factors other than 1.

Front

If one number is a multiple of another, what is their GCF?

Back

The GCF is the smaller number.