Greatest Common Factor (GCF)

Front

What is the Greatest Common Factor (GCF)?

Back

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

Front

How do you find the GCF of two numbers?

Back

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

Front

Find the GCF of 18 and 30.

Back

The GCF is 6.

Front

Find the GCF of 34 and 51.

Back

The GCF is 17.

Front

Find the GCF of 22, 33, and 88.

Back

The GCF is 11.

Front

Find the GCF of 15 and 70.

Back

The GCF is 5.

Front

Find the GCF of 54, 72, and 81.

Back

The GCF is 9.

Front

What is a factor?

Back

A factor is a whole number that can be divided evenly into another number.

Front

What is the relationship between GCF and prime factorization?

Back

The GCF can be found by identifying the common prime factors of the numbers and multiplying them together.

Front

List the factors of 12.

Back

The factors of 12 are 1, 2, 3, 4, 6, and 12.