LCM & GCF

Front

What does LCM stand for?

Back

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

Front

What does GCF stand for?

Back

GCF stands for Greatest Common Factor, which is the largest factor that two or more numbers share.

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

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 6?

Back

The LCM of 4 and 6 is 12.

Front

What is the GCF of 12 and 16?

Back

The GCF of 12 and 16 is 4.

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 15 and 20, what is their LCM?

Back

The LCM of 15 and 20 is 60.

Front

What is a composite number?

Back

A composite number is a whole number greater than 1 that has more than two factors.

Front

Is 23 a composite number?

Back

No, 23 is not a composite number; it is a prime number.