Ch 4: 3rd Grade Math: Estimation & Rounding

About This Chapter

By using the short video lessons in this Estimation and Rounding chapter, you can teach your 3rd grade students how to round whole numbers, decimals and mixed numbers. You can also teach them about estimating numbers. Ensure your 3rd graders' understanding by having them take the included quizzes and chapter examination.

Estimation and Rounding - Chapter Summary

The Estimation and Rounding chapter includes engaging video lessons that help you teach your 3rd grade students how to solve inequalities and methods of rounding numbers. Other lessons focus on teaching students how to estimate differences, quotients and products. The self-assessment quizzes and chapter examination can assist you in verifying that your students are learning the information you've presented.

Chapter Lessons and Objectives

Lesson Objective
How to Round Whole Numbers Students can learn how to round multiple-digit whole numbers to the nearest tens or hundreds.
Rounding Numbers to the Nearest Thousand, Ten Thousand and Hundred Thousand Teachers provide students with tips for rounding larger numbers.
Estimating a Difference by Rounding Instructors can teach strategies for estimating a difference.
Estimating by Front End Estimation Students learn about estimating a sum and a difference with this method.
Rounding Decimals In this lesson, 3rd graders are taught how to round whole decimals and numbers.
Estimating the Sum and Difference Between Two Decimals Students can demonstrate their knowledge of this technique by completing examples.
How to Round Mixed Numbers During this lesson, instructors teach 3rd graders to round mixed numbers.
Estimating Products Students gain practice in estimating products.
Estimating Quotients Instructors teach their students the steps for estimating quotients.
How to Solve Inequalities Using Estimation Teachers provide their 3rd graders with strategies for solving inequalities with this method.

10 Lessons in Chapter 4: 3rd Grade Math: Estimation & Rounding
Test your knowledge with a 30-question chapter practice test
How to Round Whole Numbers

1. How to Round Whole Numbers

View this lesson to learn how you can round whole numbers. Practice rounding to the nearest tens and hundreds. Learn which digit you need to look at to know whether to round up or down.

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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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.

How to Estimate Products

8. How to Estimate Products

In multiplication problems, sometimes we want to get an answer that is 'close enough,' not exact. In this lesson, you will learn how to estimate products to get a 'close enough' answer.

How to Estimate Quotients

9. How to Estimate Quotients

It may seem crazy to think you can quickly estimate the answer to something like 81,837/95 but by the end of this lesson, you'll be able to easily estimate quotients of simple and more difficult division problems. After the lesson, test your new knowledge with practice examples.

How to Solve Inequalities Using Estimation

10. How to Solve Inequalities Using Estimation

In this lesson, you'll learn how to solve inequality problems without doing a lot of complicated addition and subtraction. We'll explore the process of estimating the quantities on both sides of the inequality symbol, which can be helpful when solving these problems.

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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