What is the Greatest Common Factor of 40 and 55?

Greatest Common Factor of 40 and 55

Here we will first tell you what the Greatest Common Factor of 40 and 55 is and then show you how we found the Greatest Common Factor of 40 and 55.

The Greatest Common Factor of 40 and 55 is:

5

Step-by-step instructions for how to find the Greatest Common Factor of 40 and 55:

Step 1) We made a list of all the factors of 40 which are 1, 2, 4, 5, 8, 10, 20, 40.

Step 2) Then, we made a list of all the factors of 55 which are 1, 5, 11, 55.

Step 3) Finally, we compared the lists in Step 1 and Step 2 to find that the largest number they have in common is 5. That means that the Greatest Common Factor of 40 and 55 is 5.

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What is the Greatest Common Factor of 40 and 56?
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