Greatest Common Factor and Least Common Multiple

Front

What is the definition of the Greatest Common Factor (GCF)?

Back

The GCF of two or more numbers is the largest number that divides all of them without leaving a remainder.

Front

What is the definition of the Least Common Multiple (LCM)?

Back

The LCM of two or more numbers is the smallest number that is a multiple of all of them.

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 12 and 16?

Back

4

Front

What is the LCM of 4 and 5?

Back

20

Front

What is the GCF of 18 and 24?

Back

6

Front

What is the LCM of 3 and 7?

Back

21

Front

What is the GCF of 30 and 45?

Back

15

Front

What is the LCM of 8 and 12?

Back

24