1 <p>It is a simple question on decimal conversion. Firstly, we have to learn fractions, mixed numbers, and decimals. A fraction represents a part of a whole. It has two parts: the numerator (number on the top) here, 13, represents how many parts out of the whole. The denominator (number below) shows how many parts make the whole; here, it is 40. A mixed number has a whole part and a fractional part. A decimal is a way to represent a number that is not whole, using a decimal point (.) to separate the whole part from the fraction part. The numbers to the left of the decimal point represent the whole, and those to the right represent the fractional part.</p>