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 6th-8th Grade Math: Practice & Review
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Ch 6: 6th-8th Grade Math: Estimating & Rounding

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About This Chapter

The video lessons in the Estimating and Rounding chapter are designed to teach elementary and middle school students about the different ways in which numbers can be rounded and estimated. You can use the chapter examination to ensure your students' understanding of the rules for estimating and rounding numbers.

Estimating and Rounding - Chapter Summary

With the help of the video lessons in this Estimating and Rounding chapter, you can help your students understand the process of rounding decimals and mixed numbers. Your 6th - 8th grade students could also learn to estimate a difference in numbers by rounding. Lessons in using front-end estimation and rounding numbers to the nearest 10,000 are included. The self-assessment quizzes can test your students' grasp of the chapter's material. After they watch each of the video lessons in this chapter, students could understand more about:

  • Tips and strategies that can be applied when rounding numbers
  • The process of finding a difference and calculating an approximate number
  • How to solve sample problems that display the use of front-end estimation
  • The distinct differences between rounding regular numbers and decimals
  • Estimating sums using the rounding method
  • Considering the numerator and denominator when rounding mixed numbers

Chapter Lessons and Objectives

Lesson Objective
Rounding Numbers to the Nearest 1,000, 10,000 and 100,000 Instructors teach students how to perform this process.
Estimating a Difference By Rounding In this lesson, students discover rounding techniques for estimating a difference.
How to Use Front-End Estimation Teachers explain methods for estimating sums and differences in this lesson.
Rounding Decimals and Finding the Missing Digit Students discover techniques for rounding whole numbers and decimals.
Estimating the Sum and Difference Between Two Decimals In this lesson, students complete examples of this process.
How to Round Mixed Numbers Students may provide examples of rounding mixed numbers.

6 Lessons in Chapter 6: 6th-8th Grade Math: Estimating & Rounding
Rounding Numbers to the Nearest 1000, 10,000 & 100,000

1. Rounding Numbers to the Nearest 1000, 10,000 & 100,000

After watching this video lesson, you will be able to round larger numbers like a pro. Learn what the cutoff numbers are for rounding up and down to the nearest thousand, ten thousand and hundred thousand.
Estimating a Difference by Rounding

2. Estimating a Difference by Rounding

After studying this lesson, you will understand rounding basics. You'll also learn how to quickly solve subtraction problems by using your rounding skills.
How to Use Front-End Estimation

3. How to Use Front-End Estimation

In this video lesson, you will learn how to estimate addition and subtraction problems by using the method of front end estimation. Learn what is involved and what you need to be careful of.
Rounding Decimals & Finding the Missing Digit

4. Rounding Decimals & Finding the Missing Digit

After watching this video lesson, you will learn how to round decimals and how to use your knowledge of rounding to help you find a missing digit. Learn what the difference is between rounding decimals and rounding regular numbers.
Estimating the Sum & Difference Between Two Decimals

5. Estimating the Sum & Difference Between Two Decimals

In this video lesson, you will learn how to take an addition or subtraction problem with decimals and estimate the answer by rounding. You will learn that a rounded answer is very close to the actual answer.
How to Round Mixed Numbers

6. How to Round Mixed Numbers

After watching this video lesson, you should be able to round mixed numbers easily and quickly. You will learn about what number to look at to determine whether you should round up or round down.
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