The first step to changing 21 20/5 into a decimal is to change it to an improper fraction. To do that, we need to multiply 21 by 5 and add its product to 20 in the numerator to get: 125/5. Now we will attempt to convert 125/5 to a decimal using the following method.
A fraction is written in terms of two parts: the number on top is called the numerator and the number on the bottom is called the denominator. We can use the division method to solve this question. To get a decimal, simply divide the numerator 125 by the denominator 5:
125 (numerator) ÷ 5 (denominator) = 25
As a result, you get 25 as your answer when you convert 21 20/5 (or 125/5) to a decimal.
Practice some more problems on converting fractions to decimals:
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