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 120 by the denominator 121:
120 (numerator) ÷ 121 (denominator) = 0.99
As a result, you get 0.99 as your answer when you convert 120/121 to a decimal.