Ch 3: ORELA Math: Decimals & Percents

About This Chapter

Be sure to let our instructors know if you need any help as you study the decimals and percents concepts covered in this chapter. Quick, appealing video lessons make it easy to review the topics you'll likely encounter on your ORELA Math assessment.

ORELA Math: Decimals & Percents - Chapter Summary

These short, entertaining videos can be accessed via any Internet-enabled device, making study both fun and accessible. This chapter covers the decimals and percents concepts educators will likely face on the ORELA Math assessment, including:

  • Decimal place value
  • Addition and subtraction of decimals
  • Decimal multiplication and division
  • Rounding a decimal
  • Applications of percentages
  • Solutions for interest problems
  • Calculating discounts and taxes

If you're still confused about a topic after viewing a lesson, be sure to ask our instructors for guidance and clarification. Transcripts of the videos follow each lesson, making it easy to track down important terms and ideas.

Objectives of the ORELA Math: Decimals & Percents Chapter

Our lesson quizzes not only allow you to practice using the decimals and percents ideas presented in this chapter, but also allow you to get comfortable completing the multiple-choice style tasks on the ORELA exam and evaluate your test-taking speed.

The 150 or so questions on the ORELA Math assessment cover five content domains. Items containing decimals and percents will be found on the Mathematical Processes and Number Sense portion of the exam, which will account for 19% of your score. The remainder of the exam is devoted to the following four areas: Patterns, Algebra and Functions; Measurement and Geometry; Trigonometry and Calculus and Statistics, Probability and Discrete Mathematics. You will have four-and-a-quarter hours to complete the assessment.

7 Lessons in Chapter 3: ORELA Math: Decimals & Percents
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.

Adding and Subtracting Decimals: Examples & Word Problems

2. Adding and Subtracting Decimals: Examples & Word Problems

In math, we sometimes have to deal with decimal numbers instead of our nice whole numbers. Watch this video lesson to learn the one thing that you have to take into consideration when adding and subtracting decimals.

Multiplying and Dividing Decimals: Examples & Word Problems

3. Multiplying and Dividing Decimals: Examples & Word Problems

Watch this video lesson to learn what you need to do to get a correct answer when multiplying and dividing decimals. Learn the easy tricks to figuring out where the decimal point goes.

How to Round Decimals

4. How to Round Decimals

After watching this video lesson, you will be able to look at any decimal number and round it any which way you want. Learn the tipping point that determines whether to go up to the next number or not.

Percents: Definition, Application & Examples

5. Percents: Definition, Application & Examples

Maybe you know that 95% is an A and 75% is a C. But what do those percents really mean? In this lesson, we'll learn about percents, including how to convert them to fractions and decimals.

How to Solve Interest Problems: Steps & Examples

6. How to Solve Interest Problems: Steps & Examples

If you want to know how your money can earn money, then it's essential to learn about solving interest problems. In this lesson, we'll practice calculating interest amounts and interest rates.

Taxes & Discounts: Calculations & Examples

7. Taxes & Discounts: Calculations & Examples

When you go shopping, you don't want to be surprised by the amount of tax on an item. You also want to fully understand discounts to know how much you can save. In this lesson, we'll practice calculating both tax and discounts.

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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Other Chapters

Other chapters within the ORELA Mathematics: Practice & Study Guide course

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