Finding the LCM/LCD

Front

What is the Least Common Multiple (LCM)?

Back

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

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 they have in common.

Front

What is a multiple?

Back

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

Front

What is the Least Common Denominator (LCD)?

Back

The LCD is the smallest number that can be used as a common denominator for two or more fractions.

Front

How do you find the LCD of two fractions?

Back

To find the LCD, determine the LCM of the denominators of the fractions.

Front

What is the LCM of 3 and 5?

Back

The LCM of 3 and 5 is 15.

Front

What is the LCM of 6 and 8?

Back

The LCM of 6 and 8 is 24.

Front

Which of the following is a multiple of 10? 15, 20, 25, 30

Back

20 and 30 are multiples of 10.

Front

What must you have to add and subtract fractions?

Back

You must have common denominators.

Front

What is the first step in finding the LCM of 4 and 6?

Back

List the multiples of each number: Multiples of 4: 4, 8, 12, 16...; Multiples of 6: 6, 12, 18, 24...