Learn the fraction definition, proper fraction meaning, and how fractions work in maths. A complete guide for kids with examples, FAQs, and simple explanations. Definition of fraction in Maths In Maths, a fraction is used to represent the portion/part of the whole thing. It represents the equal parts of the whole. A fraction has two parts, namely numerator and denominator. The number on the top is called the numerator, and the number on the bottom is called the denominator. The numerator defines the number of equal parts taken, whereas the denominator defines the total number of equal parts in a whole. For example, 5/10 is a fraction . Here, 5 is a ... Learn what is a fraction , how to represent it, and how to simplify it. Explore the different types of fractions, such as proper, improper, mixed, and equivalent fractions, with examples and practice problems.