Ch 4: NES Math: Ratios & Proportions

About This Chapter

Use the lessons in this chapter to brush up on calculations for ratios and proportions and applications for this information. Our snappy videos and other tools for study can help you tackle these types of questions on the NES Math exam.

NES Math: Ratios & Proportions - Chapter Summary

Let us help you refresh your understanding of determining ratios and proportions as you prepare for the NES Math test. Our videos offer a review of topics including:

  • Definitions of ratios and rates
  • Constant and average rates
  • Definition of proportion
  • How to calculate ratios and proportions
  • How to apply scale factors to perimeter, area and volume

The lesson videos average about five minutes long, and you can watch them on a computer, smartphone or tablet, from anywhere that you have Internet access. You can assess your test preparation with the lesson quizzes and the chapter exam. Every video lesson includes examples and a clickable Timeline, which makes it easy to jump back to review specific parts of the lesson. There's also a sheet of quiz questions that you can print and use for offline study.

NES Math: Ratios & Proportions Chapter Objectives

Arizona, New Mexico, Oregon, Washington and Wisconsin require passing the 150-question NES Math test as one of the conditions for licensing as a secondary-level math teacher. The test consists entirely of multiple-choice questions, so completing our lesson quizzes, which are also multiple-choice, will give you a feel for the format of the test.

The NES Math test's questions are divided into five content domains, and questions on ratios and proportions are in the Mathematical Processes and Number Sense content domain. This part of the test accounts for 19% of the total scoring.

5 Lessons in Chapter 4: NES Math: Ratios & Proportions
Test your knowledge with a 30-question chapter practice test
Ratios & Rates: Definitions & Examples

1. Ratios & Rates: Definitions & Examples

If we have two items, or two numbers, and we want to compare them, what language can we use? How do we write the comparison? Find out as we learn about ratios and rates in this lesson.

Finding Constant and Average Rates

2. Finding Constant and Average Rates

Watch this video lesson to learn the differences between constant and average rates. You will learn the steps you need to take to find them and get two great visuals you can keep in mind to help you solve these rate problems.

Proportion: Definition, Application & Examples

3. Proportion: Definition, Application & Examples

When we want to compare one ratio, or fraction, to another equivalent ratio, it's a proportion. Learn all about proportions and practice solving proportion problems in this lesson.

Calculations with Ratios and Proportions

4. Calculations with Ratios and Proportions

Even if only 99 out of 100 people need to know how to work with ratios, the odds that they'll be useful to you are very high. In this lesson, we'll practice performing calculations with ratios and proportions.

Applying Scale Factors to Perimeter, Area, and Volume of Similar Figures

5. Applying Scale Factors to Perimeter, Area, and Volume of Similar Figures

How do shapes change sizes yet retain their proportions and similarities to other shapes? In this lesson, we'll look at what a scale factor is and how to apply it. We'll consider scale factors with regards to three different aspects of similar shapes: perimeter, area and volume.

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 NES Mathematics (304): Practice & Study Guide course