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How do you write 13.8% as a decimal?

Answer
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Hint: To convert a percent into a decimal, we will have to convert it into a fraction first. For converting it into a fraction, we will divide the percent by 100. If the percent is a whole number, we will just simplify the fraction. But if the percent is not a whole number (as is the case here), we will multiply both the numerator and denominator with 1 followed by as many zeroes as there are numbers after the decimal point in the percent. After converting it, we will turn the fraction obtained into an equivalent fraction which has 10, 100, 1000 or 1 followed by 0s as the denominator. Then, we will just write down the numerator, putting the decimal point at the correct place. The correct place is one space from the right-hand side for every zero in the denominator.

Complete step by step solution:
Given percent is 13.8%.
Now, we will divide 13.8 by 100, such that
13.8100
Since 13.8 is not a whole number, therefore we will multiply both the numerator and denominator with 10 as there is only one digit after the decimal point. Therefore, the fraction becomes
13.8×10100×10
1381000
Since the fraction already has 1000 in the denominator, we will just convert it into a decimal by writing down the numerator and putting the decimal point at the correct place. Here, the correct place will be 3 spaces from the right-hand side of 138, as there are 3 zeroes in the denominator. Therefore we will get,
1381000=0.138

Hence, 13.8% can be written in decimal form as 0.138.

Note:
13.8% can be converted into a decimal by an alternate method also. After converting 13.8% into a fraction, we have got 1381000. After simplifying this fraction into its simplest form, we will get 69500. Now to convert 69500 into a decimal, we can perform the long division method.
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