Ch 4: NMTA Math: Ratios & Proportions

About This Chapter

Use our video lessons to brush up on solving ratio and proportion problems before sitting for the NMTA Mathematics test. Review average and constant rates as well as scale factors.

NMTA Math: Ratios & Proportions - Chapter Summary

If it's been awhile since you've solved problems with ratios and proportions, sit back and watch our short video lessons. Once you complete the chapter, you should be able to do the following on the NMTA Mathematics test:

  • Define ratio and rate
  • Determine average and constant rates
  • Recognize and write proportions
  • Solve problems using proportions and ratios
  • Use scale factors to find the area, perimeter and volume of similar figures

When it comes to math, practice makes perfect. Our professional instructors break down key concepts and walk you through the techniques used to handle ratio and proportion problems. You can also use the lesson transcripts as another study tool before taking the NMTA Mathematics test.

Objectives of the NMTA Math: Ratios & Proportions Chapter

You'll be taking the NMTA Mathematics test as part of the math teacher licensing requirements in the state of New Mexico. A computer-based assessment, the exam contains 150 multiple-choice questions -- a format that mirrors the one used for this chapter's lesson quizzes.

The test includes five content areas, and the material in these video lessons correlates with questions you can expect to see in the math processes and number sense portion. This category accounts for 19% of your total test score.

5 Lessons in Chapter 4: NMTA 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

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Other Chapters

Other chapters within the NMTA Mathematics (304): Practice & Study Guide course