GlossariesGCSE GlossariesGCSE Maths GlossaryUnit Ratio

Unit Ratio - GCSE Maths Definition

Reviewed by: Dan Finlay

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A unit ratio is a ratio where one quantity in the ratio is 1. This allows us to compare the amount of other quantity (or quantities) in the ratio directly, without any further calculation.

For example, in the ratio 1 : 3, the second quantity will be three times larger than the first. Unit ratios are often used in map/atlas scales and scale modelling.

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Dan Finlay

Reviewer: Dan Finlay

Expertise: Maths Subject 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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