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Ch 18: GACE Middle Grades Math: Estimating & Rounding

About This Chapter

Renew your skills in rounding numbers and estimating sums as you train for the GACE Middle Grades Math exam. The videos and quizzes give you a boost on the questions in this portion of the test.

GACE Middle Grades Math: Estimating & Rounding - Chapter Summary

Let the lessons in this chapter help you brush up on your estimating and rounding skills as you prepare to take the GACE Middle Grades Math exam. After completing this review, you should be ready to tackle questions on the following subjects when you report to the testing center:

  • Rounding numbers to the nearest thousand, ten thousand and so on
  • Estimating a difference through rounding
  • Using front-end estimation
  • Finding a missing digit by rounding whole numbers and decimals
  • Determining the sum and the difference between two decimals through estimation
  • Rounding mixed numbers

You can complete these videos as your schedule allows, reviewing the information anywhere you have an Internet signal, even on a mobile device. Our lessons are filled with examples that make it easy to refresh your knowledge and even learn some new skills before test day.

6 Lessons in Chapter 18: GACE Middle Grades Math: Estimating & Rounding
Test your knowledge with a 30-question chapter practice test
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.

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 GACE Middle Grades Mathematics (013): Practice & Study Guide course

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