Finding Least Common Multiples and Greatest Common Factors

Front

What is the Least Common Multiple (LCM)?

Back

The Least Common Multiple (LCM) of two or more numbers is the smallest multiple that is exactly divisible by each of the numbers.

Front

How do you find the LCM of two numbers?

Back

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

Front

What is the Greatest Common Factor (GCF)?

Back

The Greatest Common Factor (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 of two numbers, list the factors of each number and identify the largest factor that appears in both lists.

Front

Find the LCM of 20 and 8.

Back

40

Front

Find the LCM of 18 and 10.

Back

90

Front

Calculate 9 x 12.

Back

108

Front

Find the LCM of 25 and 15.

Back

75

Front

What is a multiple?

Back

A multiple of a number is the product of that number and an integer.

Front

What is a factor?

Back

A factor of a number is an integer that can be multiplied by another integer to produce that number.