Least Common Multiple

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 are the first five multiples of 6?

Back

6, 12, 18, 24, 30

Front

What is the LCM of 12 and 8?

Back

24

Front

If a red subway comes every 5 minutes and a blue subway comes every 8 minutes, how long until they are both at the station again?

Back

40 minutes

Front

What is the LCM of 4 and 14?

Back

28

Front

What is the LCM of 3 and 8?

Back

24

Front

What is a multiple?

Back

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

Front

What is the relationship between LCM and GCD (Greatest Common Divisor)?

Back

The relationship is given by the formula: LCM(a, b) = (a * b) / GCD(a, b).

Front

List the first five multiples of 5.

Back

5, 10, 15, 20, 25