# Definition of Decimal

A decimal is a base-10 number. The numbers we use every day are decimal numbers. They are based on the 10 digits $\{0,1,2,3,4,5,6,7,8,9\}$.

We probably use a decimal number system because the average human has 10 fingers to count on.

The term, "decimal number" is often used to refer to a number which includes a decimal point, followed by digits that represent multiples of values like $\dfrac{1}{10}$ and $\dfrac{1}{100}$ that are less than one.

For example, $256.32$ is a decimal number.

### 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 studen

### Audience

Year 1 to Year 12 students

### Learning Objectives

Learn common math terms starting with letter D

Author: Subject Coach
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