Solution: 30/100 as a percent is 30%
Methods
Method 1 – Converting 30/100 Into a Percentage:
In a fraction, we can see how many “pieces” of a number are present (in the numerator) compared to how many pieces would make up the whole (the denominator). “Percent” means “per hundred”, which is like asking the question “how many pieces would there be if there were 100 pieces possible?”
For example, if we look at the percentage 50%, that means we have 50 pieces of the possible 100. Re-writing this in fraction form, we see 50/100.
We can start the process of converting a fraction into a percent, by figuring out how to adjust the fraction so that the denominator will be 100. First, divide 100 by the denominator:
100
100
=
1
\frac{100}{100} = 1
100 100 = 1
Then we can multiply both the numerator and denominator by this number:
30
∗
1
100
∗
1
=
30
100
\frac{30*1}{100*1} = \frac{30}{100}
100 ∗ 1 30 ∗ 1 = 100 30
This works because multiplying both the numerator and the denominator by the same number is like multiplying it by 1. (1 / 1 = 1)
Re-writing the result as a percentage, we can see that 30/100 as a percentage is 30%.
Method 2 – Converting 30/100 Into a Percentage Using Decimals:
Another common way to convert a fraction into a percentage is to first convert the fraction into a decimal. To convert 30/100 into a percentage, you would first convert 30/100 into a decimal by dividing the numerator by the denominator:
30
100
=
0.3
\frac{30}{100} = 0.3
100 30 = 0.3
Once you have converted the fraction into a decimal, you can simply multiply by 100 to get the percentage:
0.3 x 100 = 30
And there you go! Now we can see that 30/100 as a percentage is 30%, the same way we did with the first method.
Now you know of two ways you can convert 30/100 into a percentage. The best way to master these methods is to practice! Grab a pencil and paper, and come up with some of your own fractions, and become a master at converting them into percentages!
Practice more percentage conversion problems
With a just a few more problems, you could become a pro at converting fractions to percentages. You can try some more right now!
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