GCF & LCM

Front

What is the definition of GCF?

Back

GCF stands for Greatest Common Factor, which is the largest number that divides two or more numbers without leaving a remainder.

Front

What is the definition of LCM?

Back

LCM stands for Least Common Multiple, which is the smallest number that is a multiple of two or more numbers.

Front

Find the GCF of 14 and 56.

Back

The GCF of 14 and 56 is 14.

Front

Find the GCF of 28, 42, and 56.

Back

The GCF of 28, 42, and 56 is 14.

Front

Find the LCM of 3 and 5.

Back

The LCM of 3 and 5 is 15.

Front

Find the LCM of 8 and 12.

Back

The LCM of 8 and 12 is 24.

Front

If Avery gets newsletters every 5, 10, and 8 days, how many days until he gets all three on the same day again?

Back

Avery will get all three newsletters on the same day again in 40 days.

Front

What is the relationship between GCF and LCM?

Back

The GCF and LCM of two numbers are related by the formula: GCF(a, b) × LCM(a, b) = a × b.

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 they have in common.

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 they have in common.