Math Definitions - Letter I

Imperial System

Definition of Imperial System

Definition of Imperial System

The Imperial system is a system of weights and measures that was originally invented in England, and officially used in Australia until 1970. A slight variation on this system is still used in the United States, for example, but the metric system has officially replaced the Imperial System in most countries, including England.

The following are some examples of Imperial Units of Measurement:

  • Volume: fluid ounces, quarts, pints, gallons
  • Weight: ounces, pounds, stone, tons
  • Length: inches, feet, yards, miles
  • Area: square inches, square feet, square yards, acres

It is possible that your grandparents are more familiar with the Imperial System of measurement and still talk about feet, inches, pounds and so on.


The aim of this dictionary is to provide definitions to common mathematical terms. Students learn a new math skill every week at school, sometimes just before they start a new skill, if they want to look at what a specific term means, this is where this dictionary will become handy and a go-to guide for a student.


Year 1 to Year 12 students

Learning Objectives

Learn common math terms starting with letter I

Author: Subject Coach
Added on: 6th Feb 2018

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