One method to convert 138/11 to a decimal is by using the division method. Before we move ahead to the method, here is a quick recap on fractions: A fraction is a number representation that is broken down into two parts - the number on top is called the numerator, and the number on the bottom is called the denominator. To get a decimal using the division method, simply divide the numerator 138 by the denominator 11:
138 (numerator) ÷ 11 (denominator) = 12.55
And there you go! We got 12.55 as the answer when you convert 10 28/11 (or 138/11) to a decimal.