Denominator - GCSE Maths Definition

Reviewed by: Dan Finlay

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In maths, the term "denominator" refers to the bottom number in a fraction. It shows how many equal parts the whole is divided into.

For example, in the fraction ¾, the 4 is the denominator, which means the whole is split into 4 equal parts. The top number, known as the numerator, tells you how many of those parts you have.

Understanding the denominator is important because it helps you compare fractions, work out calculations, and solve problems involving parts of a whole in your GCSE Maths course.

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Dan Finlay

Reviewer: Dan Finlay

Expertise: Maths Lead

Dan graduated from the University of Oxford with a First class degree in mathematics. As well as teaching maths for over 8 years, Dan has marked a range of exams for Edexcel, tutored students and taught A Level Accounting. Dan has a keen interest in statistics and probability and their real-life applications.

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