You Can Do Math: Percentages

This book will teach you about percentages and how to do calculations involving percentages. Most calculations can be done with and without a calculator. The questions and answers (which show you how to solve percentage problems) at the end of chapters will help you master this important math topic.

Topics covered include:

• What is a percentage and why use percentages?
• Converting between fractions and percentages
• Converting between decimals and percentages
• Calculating percentages of quantities and amounts
• Simple interest
• Compound interest
• Percentage increases and compound interest
• Percentages decreases and depreciation
• Reverse percentages

Here is the Table of Contents:

Table of Contents

Introduction

Chapter 1: Introducing Percentages
What is a Percentage?
Why Use Percentages?

Chapter 2: Converting Between Fractions and Percentages
How to Convert a Fraction into a Percentage
- Converting a Fraction into a Percentage without a Calculator
- Converting a Fraction into a Percentage without a Calculator (Equivalent Fraction Shortcut)
- Converting a Fraction into a Percentage using a Calculator
How to Convert a Percentage into a Fraction
Table of Equivalent Fractions and Percentages
Questions
Answers to Chapter 2 Questions

Chapter 3: Converting Between Decimals and Percentages
How to Convert a Decimal into a Percentage
- Converting a Decimal into a Percentage without a Calculator
- Converting a Decimal into a Percentage using a Calculator
How to Convert a Percentage into a Decimal
- Converting a Percentage into a Decimal without a Calculator
- Converting a Percentage into a Decimal using a Calculator
Table of Equivalent Fractions, Decimals and Percentages
Questions
Answers to Chapter 3 Questions

Chapter 4: Calculating Percentages of a Quantity or Amount
How to Calculate a Percentage of a Quantity or Amount
- Calculating a Percentage of a Quantity/Amount without a Calculator
- Calculating a Percentage of a Quantity/Amount without a Calculator (Using Portions Shortcut)
- Calculating a Percentage of a Quantity/Amount using a Calculator
Questions
Answers to Chapter 4 Questions

Chapter 5: Simple Interest
A Note on Terminology
How to Perform Simple Interest Calculations
- Simple Interest Calculations without a Calculator
- Simple Interest Calculations using a Calculator
Questions
Answers to Chapter 5 Questions

Chapter 6: Percentage Increases and Compound Interest
Percentage Increases
- How to Increase a Quantity/Amount by a Percentage
- How to Repeatedly Increase a Quantity/Amount by a Percentage
- Formulae for Percentage Increases
Compound Interest
- Compound Interest Terminology
- How to Perform Compound Interest Calculations
Questions
Answers to Chapter 6 Questions

Chapter 7: Percentage Decreases and Depreciation
Percentage Decreases
- How to Decrease a Quantity/Amount by a Percentage
- How to Repeatedly Decrease a Quantity/Amount by a Percentage
- Formulae for Percentage Decreases
Depreciation
- How to Perform Depreciation Calculations
Questions
Answers to Chapter 7 Questions

Chapter 8: Reverse Percentages
How to Reverse a Percentage Increase
- Formulae to Reverse a Percentage Increase
- Reverse a Percentage Increase Examples
How to Reverse a Percentage Decrease
- Formulae to Reverse a Percentage Decrease
- Reverse a Percentage Decrease Examples
Questions
Answers to Chapter 8 Questions

Conclusion