GCF of Two Numbers

Front

What is the Greatest Common Factor (GCF)?

Back

The GCF of two or more numbers is the largest positive integer that divides each of the 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, identify the common factors, and select the largest one.

Front

What are factors?

Back

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

Front

Find the GCF of 16 and 20.

Back

4

Front

Find the GCF of 8 and 14.

Back

2

Front

Find the GCF of 14 and 21.

Back

7

Front

Find the GCF of 8 and 10.

Back

2

Front

Find the GCF of 4 and 16.

Back

4

Front

What is the relationship between GCF and LCM?

Back

The GCF (Greatest Common Factor) and LCM (Least Common Multiple) of two numbers are related by the formula: GCF × LCM = Product of the numbers.

Front

What is a prime number?

Back

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.