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Ch 3: Decimals and Percents: Help and Review

About This Chapter

The Decimals and Percents chapter of this Graduate Management Admission Test (GMAT) Help and Review course is the simplest way to master decimals and percents. This chapter uses simple and fun videos that are about five minutes long, plus lesson quizzes and a chapter exam to ensure students learn the essentials of decimals and percents.

Who's it for?

Anyone who needs help preparing for the math portion of the GMAT will benefit from taking this course. You will be able to grasp the subject matter faster, retain critical knowledge longer and earn better grades. You're in the right place if you:

  • Have fallen behind in understanding the meaning of decimal place value, as well as how to order and compare decimals.
  • Need an efficient way to learn about decimals and percents.
  • Learn best with engaging auditory and visual tools.
  • Struggle with learning disabilities or learning differences, including autism and ADHD.
  • Experience difficulty understanding your teachers.
  • Missed class time and need to catch up.
  • Can't access extra math resources at school.

How it works:

  • Start at the beginning, or identify the topics that you need help with.
  • Watch and learn from fun videos, reviewing as needed.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Submit questions to one of our instructors for personalized support if you need extra help.
  • Verify you're ready by completing the Decimals and Percents chapter exam.

Why it works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the Decimals and Percents chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any relevant question. They're here to help!
  • Study With Flexibility: Watch videos on any web-ready device.

Students will review:

In this chapter, you'll learn the answers to questions including:

  • How do I solve arithmetic problems with decimals?
  • How do I define percent?
  • What steps should I follow to convert between decimals and percents?
  • How do I perform calculations with percents?
  • What steps do I follow to convert decimals into fractions?

11 Lessons in Chapter 3: Decimals and Percents: Help and Review
Test your knowledge with a 30-question chapter practice test
What is a Decimal Place Value?

1. What is a Decimal Place Value?

In this video lesson, you will see how a decimal, a simple dot, can change the place value of all the digits in a number. You will also learn how to read decimals using place values.

Comparing and Ordering Decimals

2. Comparing and Ordering Decimals

In this video lesson, you'll find out how you can look at any two decimals and immediately tell which is greater than the other. You'll also learn how to quickly sort decimals from least to greatest or vice versa.

Arithmetic with Decimal Numbers

3. Arithmetic with Decimal Numbers

Watch this video lesson and see how our little professor goes about adding, subtracting, multiplying, and dividing decimal numbers all without the use of a calculator!

Solving Problems Using Decimal Numbers

4. Solving Problems Using Decimal Numbers

Problems involving decimal numbers might sound like a way to torture you, but learning how important these types of problems are in the real world is important. In this lesson, you will see a couple areas in life where you routinely encounter decimal number problems.

What is a Percent? - Definition & Examples

5. What is a Percent? - Definition & Examples

Thinking in terms of pizza is an excellent way to think about percentages. Learn how it can help you understand percentages in this video lesson. You will also learn about the uses of percentages in the real world.

Changing Between Decimals and Percents

6. Changing Between Decimals and Percents

Watch as we go on a rollercoaster ride in changing from a decimal to percent and then back again. Learn to master this technique so you can get as fast as a rollercoaster going downhill on tests and quizzes when you have to convert between the two.

Solve Problems Using Percents

7. Solve Problems Using Percents

Percents are your friend. Think of all the cool things percents do for you. They save you money, and they tell you how well you are doing in school. Learn how you can solve problems with percents in this video lesson.

Changing Between Decimals and Fractions

8. Changing Between Decimals and Fractions

In this video lesson, you will learn about the usefulness of knowing how to change quickly between decimals and fractions. You will also learn how changing from a decimal to a fraction is different than changing from a fraction to a decimal.

0.625 as a Percentage: Steps & How-To

9. 0.625 as a Percentage: Steps & How-To

In this lesson, we will go over each step in converting the decimal 0.625 to a percentage. We will do this by first setting up 0.625 as a fraction then multiplying it to get 100 in the denominator.

Dividing Decimals: Steps, Rules & Examples

10. Dividing Decimals: Steps, Rules & Examples

In this lesson, you'll review some division terminology. Then, you'll learn the steps for decimal division and see them carried out in a few examples. Afterward, you can test your knowledge with a brief quiz.

Multiplying Decimals: Rules, Steps & Examples

11. Multiplying Decimals: Rules, Steps & Examples

Do you know how to multiply numbers with more than one digit but when it's a decimal you forget what to do with the decimal point? This lesson teaches you the steps for multiplying decimals. Then see those steps in action through the use of examples.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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