The first step to changing 3 21/15 into a decimal is to change it to an improper fraction. To do that, we need to multiply 3 by 15 and add its product to 21 in the numerator to get: 66/15. Now we will attempt to convert 66/15 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 66 by the denominator 15:
66 (numerator) ÷ 15 (denominator) = 4.4
As a result, you get 4.4 as your answer when you convert 3 21/15 (or 66/15) to a decimal.
Practice some more problems on converting fractions to decimals:
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