The first step to changing 42 90/84 into a decimal is to change it to an improper fraction. To do that, we need to multiply 42 by 84 and add its product to 90 in the numerator to get: 3618/84. Now we will attempt to convert 3618/84 to a decimal using the following method:
Put in a nutshell, a fraction is written in terms of two parts separated by a line in between: the number above the line is called the numerator and the number below the line is called the denominator. To solve this question, we can use the division method to get a decimal: simply divide the numerator 3618 by the denominator 84 to get the decimal:
3618 (numerator) ÷ 84 (denominator) = 43.07
That’s it! When you convert 42 90/84 (or 3618/84) to a decimal, 43.07 is your answer.
All it takes to be better at something is some practice! Our math tutors suggest that you take a look at some more similar problems on converting fractions to decimals and give them a go:
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