LCM and GCF Computation and Word Problems

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

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 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

How do you find the GCF of two numbers?

Back

To find the GCF of two numbers, list the factors of each number and find the largest factor that appears in both lists.

Front

What is the LCM of 6 and 9?

Back

The LCM of 6 and 9 is 18.

Front

What is the GCF of 12 and 18?

Back

The GCF of 12 and 18 is 6.

Front

If Ronald does laundry every 6 days and Tim every 9 days, when will they do laundry together again?

Back

They will do laundry together again in 18 days.

Front

How many teams can be formed with 12 male and 18 female students?

Back

The greatest number of teams that can be formed is 6.

Front

What is the first caller to win both a $100 bill and movie tickets if every 30th and 40th caller wins?

Back

The first caller to win both prizes is the 120th caller.

Front

Find the LCM of 12 and 8.

Back

The LCM of 12 and 8 is 24.