GCF and LCM

Front

What does GCF stand for?

Back

GCF stands for Greatest Common Factor.

Front

What does LCM stand for?

Back

LCM stands for Least Common Multiple.

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

How do you find the LCM of two numbers?

Back

To find the LCM, list the multiples of each number and identify the smallest multiple they have in common.

Front

What is the GCF of 8 and 12?

Back

The GCF of 8 and 12 is 4.

Front

What is the LCM of 4 and 5?

Back

The LCM of 4 and 5 is 20.

Front

Is the GCF of two prime numbers always 1?

Back

Yes, the GCF of two prime numbers is always 1.

Front

What is the GCF of 15 and 25?

Back

The GCF of 15 and 25 is 5.

Front

What is the LCM of 3 and 7?

Back

The LCM of 3 and 7 is 21.

Front

If the GCF of two numbers is 1, what does that indicate about the numbers?

Back

It indicates that the numbers are coprime, meaning they have no common factors other than 1.