Solution: 3 21/8 as a decimal is 5.63MethodsFirst step – Making the fraction improper:The first step to changing 3 21/8 into a decimal is to change it to an improper fraction. To do that, we need to multiply 3 by 8 and add its product to 21 in the numerator to get: 45/8. Now we will attempt to convert 45/8 to a decimal using the following method. Explanation using the division 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 45 by the denominator 8:45 (numerator) ÷ 8 (denominator) = 5.63As a result, you get 5.63 as your answer when you convert 3 21/8 (or 45/8) to a decimal.Convert some more fractions to decimals!Practice some more problems on converting fractions to decimals:What is 4 2/14 as a decimal?What is 9 25/12 as a decimal?What is 4 64/17 as a decimal?What is 3 57/24 as a decimal?