GCF and LCM

Front

What is the Greatest Common Factor (GCF)?

Back

The GCF is the largest number that divides two or more numbers without leaving a remainder.

Front

What is the Least Common Multiple (LCM)?

Back

The LCM is the smallest number that is a multiple of two or more numbers.

Front

How do you find the GCF of two numbers?

Back

You can find the GCF by listing the factors of each number and identifying the largest common factor.

Front

How do you find the LCM of two numbers?

Back

You can find the LCM by listing the multiples of each number and identifying the smallest common multiple.

Front

What is prime factorization?

Back

Prime factorization is expressing a number as the product of its prime factors.

Front

What is a factor tree?

Back

A factor tree is a diagram that shows the prime factorization of a number by breaking it down into its factors.

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 two numbers are 8 and 12, what is their GCF?

Back

The GCF of 8 and 12 is 4.

Front

If two numbers are 3 and 7, what is their LCM?

Back

The LCM of 3 and 7 is 21.