Finding LCM and GCF

Front

What is the least common multiple (LCM)?

Back

The LCM is the smallest multiple that is shared by two or more numbers.

Front

How do you find the LCM of two numbers?

Back

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

Front

What is the greatest common factor (GCF)?

Back

The GCF is the largest factor that two or more numbers share.

Front

How do you find the GCF of two numbers?

Back

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

Front

What is the LCM of 4 and 5?

Back

The LCM of 4 and 5 is 20.

Front

What is the GCF of 12 and 16?

Back

The GCF of 12 and 16 is 4.

Front

If the LCM of two numbers is 30, what could the numbers be?

Back

The numbers could be 5 and 6, or 3 and 10.

Front

What is the relationship between LCM and GCF?

Back

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

Front

Find the LCM of 6 and 8.

Back

The LCM of 6 and 8 is 24.

Front

Find the GCF of 18 and 24.

Back

The GCF of 18 and 24 is 6.