# How to Calculate 1/5 Plus 4/5

Are you looking to work out and calculate how to add 1/5 plus 4/5? In this really simple guide, we'll teach you exactly what 1/5 + 4/5 is and walk you through the step-by-process of how to add two fractions together.

To start with, the number above the line in a fraction is called a numerator and the number below the line is called the denominator.

Why do you need to know this? Well, because the easiest way to add fractions together is to make sure both fractions have the same denominator.

Let's set up 1/5 and 4/5 side by side so they are easier to see:

In this calculation, some of the hard work has already been done for us because the denominator is the same in both fractions. All we need to do is add the numerators together and keep the denominator as it is:

You're done! You now know exactly how to calculate 1/5 + 4/5. Hopefully you understood the process and can use the same techniques to add other fractions together. The complete answer is below (simplified to the lowest form):

## Convert 1/5 plus 4/5 to Decimal

Here's a little bonus calculation for you to easily work out the decimal format of the fraction we calculated. All you need to do is divide the numerator by the denominator and you can convert any fraction to decimal:

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### Preset List of Fraction Addition Examples

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