Math Definitions - Letter R
Chapters
Ruler
Definition of Ruler
A Ruler is a tool that you can use to measure distances and rule straight lines.
Your teacher might tell you that it is more correct to call a ruler a "rule".
The picture shows a ruler marked in centimetres. Each of the smaller divisions between the numbers corresponds to \(1 \text{ mm}\). There are \(10\) divisions of each centimetre, because there are \(10\) millimetres in one centimetre.
I just noticed that the numbers on this ruler are out of order. See if you can spot the mistake. The ruler should show all the numbers from \(1\) up to \(30\) in order.
Many rulers have markings in inches and centimetres.
Description
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.
Audience
Year 1 to Year 12 students
Learning Objectives
Learn common math terms starting with letter R
Author: Subject Coach
Added on: 5th Feb 2018
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