# Definition of Operation An operation is a form of calculation that takes one or more numbers and combines them in some way to form another number.

The most common operations are addition (+), subtraction (-), multiplication ($\times$) and division ($\div$), but there are many more. For example, the square root operation $\sqrt{343}$ finds the number that is squared to give $343$.

In the mathematical expression, $3 \times 5 = 15$, the operation is multiplication ($\times)$.

### 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 O

Author: Subject Coach
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