# Chapter 3: Exponents

## 3.1 Introduction

We use exponents and powers to write very large or very small numbers in a simpler form. Exponents are really helpful because they make working with numbers easier and calculations more accurate. Exponents are used in the sciences, engineering, accounting and even in computer games. In mathematics, it is important to understand how to do calculations with numbers and variables represented in exponential form.

In this chapter, we will begin by revising how to write whole numbers in exponential form. We will also work with integers, surds and numbers expressed in scientific notation. To see how exponents are used in real life, we will solve word problems involving exponents.