GCF & LCM

Front

What does GCF stand for in mathematics?

Back

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

Front

What does LCM stand for in mathematics?

Back

LCM stands for Least Common Multiple, which is the smallest positive integer that is a multiple of two or more integers.

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

How do you find the LCM of two numbers?

Back

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

Front

What is the relationship between GCF and LCM?

Back

The product of the GCF and LCM of two numbers is equal to the product of the two numbers.

Front

Find the GCF of 12 and 18.

Back

The GCF of 12 and 18 is 6.

Front

Find the LCM of 4 and 5.

Back

The LCM of 4 and 5 is 20.

Front

If a number is divisible by both 30 and 40, what is the smallest such number?

Back

The smallest number divisible by both 30 and 40 is their LCM, which is 120.

Front

What is the GCF of 56 and 49?

Back

The GCF of 56 and 49 is 7.

Front

What is the LCM of 18 and 24?

Back

The LCM of 18 and 24 is 72.