# Ch 4: WEST Middle Grades Math: Estimating & Rounding

### About This Chapter

## WEST Middle Grades Math: Estimating & Rounding - Chapter Summary

These lessons provide a new avenue for you to study and learn to solve estimating and rounding math problems in preparation for the WEST Middle Grades exam. The video lessons will cover these topics in the chapter:

- Estimate differences by rounding
- Front-end estimation
- Round to the nearest 1,000, 10,000 or 100,000
- Decimals & missing digits
- Estimate sums & difference between two decimals
- Round mixed numbers

Math instructors will start you with basic math problems, take you through an explanation and finish with solutions. These will be the same types of estimating and rounding problems that will be seen on the exam. The video lessons provide a unique method of learning that keeps the information engaging throughout the chapter.

### Objectives of the WEST Middle Grades Math: Estimating & Rounding Chapter

The WEST Middle Grades Math exam is designed to assess your preparedness to teach the subject matter at hand. The topics in this portion of the course specialize in the areas of estimating and rounding as they relate to mathematics. The self-administered lesson quizzes will give you an accurate idea as to your knowledge of each topic and will expose you to questions as they will appear on the exam.

The WEST exam is a computer-based test that consists solely of 150 multiple-choice questions and will last approximately four hours and 15 minutes. The estimating and rounding elements will be one of many different mathematical aspects of the test. Your exam results will be provided immediately upon completion of the test and your score report will be released within two weeks.

### 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.

### 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.

### 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.

### 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.

### 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.

### 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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### Other Chapters

Other chapters within the WEST Middle Grades Mathematics (203): Practice & Study Guide course

- WEST Middle Grades Math: Basic Arithmetic Operations
- WEST Middle Grades Math: Solving Math Word Problems
- WEST Middle Grades Math: Properties of Numbers
- WEST Middle Grades Math: Number Theory
- WEST Middle Grades Math: Roots & Radical Expressions
- WEST Middle Grades Math: Exponents & Exponential Expressions
- WEST Middle Grades Math: Scientific Notation
- WEST Middle Grades Math: Simplifying Whole Number Expressions
- WEST Middle Grades Math: Integers
- WEST Middle Grades Math: Rational Numbers
- WEST Middle Grades Math: Introduction to Fractions
- WEST Middle Grades Math: Operations with Fractions
- WEST Middle Grades Math: Introduction to Decimals
- WEST Middle Grades Math: Operations with Decimals
- WEST Middle Grades Math: Percents
- WEST Middle Grades Math: Money & Consumer Math
- WEST Middle Grades Math: Number Patterns & Sequences
- WEST Middle Grades Math: Properties of Functions
- WEST Middle Grades Math: Graphing Functions
- WEST Middle Grades Math: Negative Numbers
- WEST Middle Grades Math: Absolute Value
- WEST Middle Grades Math: Inequalities
- WEST Middle Grades Math: Factoring
- WEST Middle Grades Math: Monomials & Polynomials
- WEST Middle Grades Math: Writing Algebraic Expressions
- WEST Middle Grades Math: Basic Algebraic Expressions
- WEST Middle Grades Math: Algebraic Distribution
- WEST Middle Grades Math: Writing & Solving One-Step Equations
- WEST Middle Grades Math: Writing & Solving Two-Step Equations
- WEST Middle Grades Math: Simplifying & Solving Rational Expressions
- WEST Middle Grades Math: The Coordinate Graph
- WEST Middle Grades Math: Linear Equations
- WEST Middle Grades Math: Systems of Linear Equations
- WEST Middle Grades Math: Rates, Ratios & Proportions
- WEST Middle Grades Math: Measurements
- WEST Middle Grades Math: Perimeter & Area
- WEST Middle Grades Math: Polyhedrons & Geometric Solids
- WEST Middle Grades Math: Symmetry, Similarity & Congruence
- WEST Middle Grades Math: Properties of Lines
- WEST Middle Grades Math: Angles
- WEST Middle Grades Math: Triangles
- WEST Middle Grades Math: Triangle Theorems & Proofs
- WEST Middle Grades Math: Similar Polygons
- WEST Middle Grades Math: The Pythagorean Theorem
- WEST Middle Grades Math: Quadrilaterals
- WEST Middle Grades Math: Circles
- WEST Middle Grades Math: Circular Arcs & Measurement
- WEST Middle Grades Math: Transformations
- WEST Middle Grades Math: Data & Graphs
- WEST Middle Grades Math: Statistics
- WEST Middle Grades Math: Data Collection
- WEST Middle Grades Math: Samples & Populations
- WEST Middle Grades Math: Probability
- WEST Middle Grades Math: Sets
- WEST Middle Grades Mathematics Flashcards