Is 8/10 Greater Than 2/5?
Are you looking to calculate whether 8/10 is greater than 2/5? One of the most common calculations you'll make in math is to compare fractions. In this really simple guide, we'll teach you how to compare and determine if 8/10 is bigger than 2/5 and walk you through the step-by-process of how the calculation is made.
Want to quickly learn or show students how to compare 8/10 and 2/5? Play this very quick and fun video now!
As we always do in these tutorials, let's recap and remind ourselves that the number above the fraction line is called the numerator and the number below the fraction line is called the denominator.
Depending on the math problem you want to solve, there are two methods to calculate if 8/10 is larger than 2/5:
Let's start with the first method: converting the fractions to the same denominator. First, we'll set up 8/10 and 2/5 side by side so they are easier to see:
Our denominators are 10 and 5. What we need to do is find the lowest common denominator of the two numbers. This is the smallest number that can be divided by both 10 and 5. In this case, the lowest common denominator is 10.
If we multiply the first denominator (10) by 1 we will get 10. If we multiply the second denominator (5) by 2 we will also get 10. We also need to multiply the numerators above the line by the same amounts so that the fraction values are correct:
This is what 8/10 and 2/5 looks like with the same denominator:
Now that these fractions have been converted to have the same denominator, we can clearly see by looking at the numerators that 8 is greater than 4 which also means that 8/10 is greater than 2/5.
Converting to Decimal
You can also compare these fractions by first converting them to decimal format. This is a lot faster than working out the lowest common denominator. All we do here is divide the numerator by the denominator for each fraction:
Now that these fractions have been converted to decimal format, we can compare the numbers to get our answer. 0.8 is greater than 0.4 which also means that 8/10 is greater than 2/5.
Hopefully this tutorial has helped you to understand how to compare fractions and you can use your new found skills to compare whether one fraction is greater than another or not!
Preset List of Calculations
Below are links to some preset calculations that are commonly searched for: