Solution: 1 21/129 as a decimal is 1.16MethodsFirst step – Making the fraction improper:The first step to changing 1 21/129 into a decimal is to change it to an improper fraction. To do that, we need to multiply 1 by 129 and add its product to 21 in the numerator to get: 150/129. Now we will attempt to convert 150/129 to a decimal using the following method:Explanation using the division method:A fraction is usually split into two parts: the first part is the number on top, called the numerator; and the second part is the number on the bottom, called the denominator. These are both separated by a line called the “divisor line”. We can use the division method help to solve this question: to get a decimal, simply divide the numerator 150 by the denominator 129 (which you can enter in any calculator):150 (numerator) ÷ 129 (denominator) = 1.16And finally, you get 1.16 as your answer when you convert 1 21/129 (or 150/129) to a decimal. Practice more conversion problemsAll it takes to be better at something is some practice! Take a look at some more similar problems on converting fractions to decimals and give them a go:What is 13 39/7 as a decimal?What is 3 51/32 as a decimal?What is 2 16/31 as a decimal?What is 1 4/25 as a decimal?