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 appears in both lists.

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 appears in both lists.

Front

What are factors?

Back

Factors are numbers that can be multiplied together to get another number.

Tags

CCSS.4.OA.B.4

Front

What are multiples?

Back

Multiples of a number are the result of multiplying that number by integers (e.g., 1, 2, 3, ...).

Front

Find the GCF of 27 and 70.

Back

The GCF of 27 and 70 is 1.

Front

Find the GCF of 20 and 35.

Back

The GCF of 20 and 35 is 5.

Front

Which one is a multiple of 4? 33, 22, 18, 24

Back

24 is a multiple of 4.

Tags

CCSS.4.OA.B.4

Front

Calculate LCM(3, 11).

Back

The LCM(3, 11) is 33.