About This Chapter
Estimation & Rounding - Chapter Summary
Use the video lessons in this chapter to enhance your students' knowledge of estimation and rounding. The short and humorous videos explain the process and uses for rounding whole numbers, decimals and mixed numbers and how to estimate sums, differences, products, quotients and inequalities. Multiple-choice lesson quizzes are included for you to decide if your students are ready to move on, and a concluding chapter exam can help you determine what your students have taken away from this chapter.
Chapter Lessons and Objectives
|How to Round Whole Numbers||Students learn how to round two-digit and three-digit whole numbers to the nearest tens and three-digit whole numbers to the nearest hundreds.|
|Rounding Numbers to the Nearest 1,000, 10,000 and 100,000||Instructors supply examples and teach rounding to these place values.|
|Estimating a Difference By Rounding||With this lesson, students solve differences by estimating and rounding.|
|How to Use Front-End Estimation||Students learn what front-end estimation is and how to use it to estimate sums and differences|
|Rounding Decimals and Finding the Missing Digit||Instructors explain how to round decimals and how to round decimals and whole numbers in order to find the missing digit.|
|Estimating the Sum and Difference Between Two Decimals||Instructors show how to estimate problems between two decimals.|
|How to Round Mixed Numbers||Students examine the way to round mixed numbers up or down.|
|How to Estimate Products||In this lesson, students learn to approximate products.|
|How to Estimate Quotients||Students learn to estimate division problems.|
|How to Solve Inequalities Using Estimation||Students practice solving inequalities by estimating.|
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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Other chapters within the 3rd-5th Grade Math: Practice & Review course
- Number Sense & Arithmetic
- Number Properties
- Steps for Solving Math Word Problems
- Multiples of Whole Numbers
- Multiplication Skills Practice
- Division Skills Practice
- Simplifying Whole Number Expressions
- Understanding Algebraic Expressions
- Data & Graphs
- Probability & Statistics
- Units of Measurement
- Working with Geometric Figures
- Identifying Triangles
- Circle Types & Parts
- How to Measure Perimeter, Area & Volume
- Symmetry, Similarity & Congruence
- Polyhedrons & Geometric Solids
- Identifying & Working with Fractions
- Operations with Fractions
- Adding, Subtracting, Multiplying & Dividing Decimals
- Operations with Decimals
- Mixed Operations
- The Coordinate Graph
- How to Graph a Function
- Number Theory & Prime Factorization
- Rates, Ratios & Proportions