# Week 5: Relationships among numbers

## Introduction

This week, you will start your study of percentages. This will continue in Week 6, when you will use percentages in a variety of different everyday situations. Whether you are shopping around for the best deal, or reading an article online, understanding percentages can be useful in your everyday life. Percentages follow on naturally from fractions, because a percentage is just a specific kind of fraction, where the denominator (the number at the bottom of the fraction) is 100. So try and keep this in mind as you work your way through the activities here. You will notice that this week contains more activities for you to carry out than in some other weeks – this is to give you the chance to build your confidence with a concept that can at first seem quite challenging.

Watch Maria introduce Week 5:

#### Transcript

After this study week, you should be able to:

- convert between fractions, decimals and percentages
- write numbers as percentages
- work out a percentage of a number
- understand how percentages are used in everyday life.