Greatest Common Factors

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

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

What is the GCF of 24 and 60?

Back

12

Front

What is the GCF of 9 and 15?

Back

3

Front

What is the GCF of 9 and 27?

Back

9

Front

What is the GCF of 12 and 20?

Back

4

Front

What is the relationship between GCF and LCM?

Back

The GCF is used to simplify fractions, while the LCM is used to find common denominators.

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

Can the GCF be larger than the smallest number in a set?

Back

No, the GCF cannot be larger than the smallest number in the set.