GCF and LCM

Front

What is the GCF (Greatest Common Factor)?

Back

The GCF of two or more numbers is the largest number that divides all of them 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 that they have in common.

Front

What is the LCM (Least Common Multiple)?

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 LCM of two numbers?

Back

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

Front

Find the GCF of 44 and 55.

Back

11

Front

Identify the first three common multiples of 2 and 4.

Back

4, 8, and 12

Front

Find the GCF of 28 and 42.

Back

14

Front

Find the GCF of 12, 42, and 60.

Back

6

Front

Find the LCM of 5, 6, and 15.

Back

30

Front

What is a factor?

Back

A factor is a whole number that can be divided evenly into another number.