# GCD3 Exercises on Getting the GCD of Two or More Numbers

In **GCD1** we learned about the meaning of common divisors and in **GCD2**, we learned how to get the greatest common divisors of two numbers. In this post, we are going to do some exercises on getting the GCD of two or more numbers.

After watching the videos above, you can practice by answering the exercises below.

**Practice**

Find the GCD of the following:

1.) 18 and 42

2.) 16 and 20

3.) 39 and 52

4.) 48, 56, and 72

5.) 24, 36, and 42

The answers to the exercises above are available below this text. Answer the exercises above before scrolling. You may also want to proceed to the **next lesson** which is on getting the GCD of two or more numbers using prime factorization.

*Answers to Practice*

*1.) 6*

*2.) 4*

*3.) 13*

*4) 8*

*5.) 6*