LCM and GCF

Front

What does LCM stand for?

Back

LCM stands for Least Common Multiple, which is the smallest multiple that two or more numbers share.

Front

What does GCF stand for?

Back

GCF stands for Greatest Common Factor, which is the largest factor that two or more numbers share.

Front

How do you find the LCM of two numbers?

Back

To find the LCM, list the multiples of each number and find the smallest multiple that appears in both lists.

Front

How do you find the GCF of two numbers?

Back

To find the GCF, list the factors of each number and find the largest factor that appears in both lists.

Front

What is the LCM of 4 and 5?

Back

The LCM of 4 and 5 is 20.

Front

What is the GCF of 12 and 16?

Back

The GCF of 12 and 16 is 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 the relationship between LCM and GCF?

Back

The product of the LCM and GCF of two numbers equals the product of the numbers themselves.

Front

What is the LCM of 6 and 8?

Back

The LCM of 6 and 8 is 24.

Front

What is the GCF of 30 and 45?

Back

The GCF of 30 and 45 is 15.