GCF and LCM

Front

What does GCF stand for?

Back

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

Front

What does LCM stand for?

Back

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

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.

Front

What is the GCF of 30 and 45?

Back

The GCF of 30 and 45 is 15.

Front

What is the LCM of 3 and 5?

Back

The LCM of 3 and 5 is 15.

Front

If the GCF of two numbers is 1, what does that indicate about the numbers?

Back

If the GCF is 1, the numbers are coprime, meaning they have no common factors other than 1.

Front

What is the GCF of 56 and 49?

Back

The GCF of 56 and 49 is 7.

Front

What is the LCM of 4 and 10?

Back

The LCM of 4 and 10 is 20.

Front

What is the GCF of 18 and 24?

Back

The GCF of 18 and 24 is 6.