Greatest Common Factor

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

1. List the factors of each number. 2. Identify the common factors. 3. The largest of these common factors is the GCF.

Front

What are the factors of 12?

Back

1, 2, 3, 4, 6, 12

Front

What are the factors of 25?

Back

1, 5, 25

Front

What is the GCF of 12 and 48?

Back

12

Front

What is the GCF of 8 and 24?

Back

8

Front

What is the GCF of 12 and 28?

Back

4

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 a factor?

Back

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

Front

List the steps to find the GCF using prime factorization.

Back

1. Find the prime factorization of each number. 2. Identify the common prime factors. 3. Multiply the common prime factors to find the GCF.