# Ch 18: ACT Math: Absolute Value

### About This Chapter

## ACT Math: Absolute Value - Chapter Summary

Sharpen your math skills for the ACT with the following topics pertaining to absolute value:

- Define absolute value
- Evaluate absolute value expressions
- Solve absolute value equations

In addition to the definition of absolute value and solution examples, this chapter's lessons provide practice problems, giving you more experience in solving absolute value questions. The short, user-friendly videos present a review of absolute value concepts, and the results on the quizzes will give you immediate feedback.

### ACT Math Objectives

The math portion of the ACT is a 60-minute exam with 60 multiple-choice questions, for which you'll choose the one correct answer. The test addresses six major content areas of mathematics:

- Pre-algebra
- Elementary algebra
- Intermediate algebra
- Coordinate geometry
- Plane geometry
- Trigonometry

All the problems on the test are solvable without a calculator, and the test booklets provide space for pencil calculations. However, you may use approved calculator models during testing. Please check the student ACT site for additional information about acceptable calculator use. More than half of the test (55%) assesses algebraic concepts. Topics on the ACT covered by the video lessons include:

- Absolute value
- Ordering numbers by value
- Absolute value equations
- Absolute value inequalities

The quizzes associated with each lesson can help you hone your testing strategy and show you areas where you need to improve. You'll get four math scores in your report, including a total score on the complete test and sub scores in pre-algebra/elementary algebra, intermediate algebra/coordinate geometry and plane geometry/trigonometry.

### 1. What is an Absolute Value?

When we're talking and comparing numbers, we often don't care whether its positive or negative, just how big it is. This is often called the magnitude of a number and we find it by taking the absolute value. Learn all about it here!

### 2. Solving Absolute Value Practice Problems

There are many easy mistakes to make when solving absolute value equations. Learn how to avoid those mistakes here by working on examples of absolute value equations with operations on the inside and the outside of the absolute value.

### 3. How to Solve an Absolute Value Equation

Once you get familiar with any new operation, the next step in any algebra class is to learn how to solve equations with that operation in them. Absolute values are no different. Solve absolute value equations here!

### 4. How to Evaluate Absolute Value Expressions

Substituting values into absolute values doesn't have to be too hard, but it can be if you're given deceiving beginning information. See if you're up to it by checking out this video!

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### Other Chapters

Other chapters within the ACT Prep: Practice & Study Guide course

- ACT: About the Test
- ACT English: Section Overview
- ACT English: Punctuation
- ACT English: Grammar and Usage
- ACT English: Sentence Structure
- ACT English: Parts of an Essay
- ACT English: Rhetorical Strategy
- ACT English: Organization
- ACT English: Style
- ACT Math: Overview
- ACT Math: Number & Quantity
- ACT Math: Pre-Algebra
- ACT Math: Algebraic Expressions
- ACT Math: Radicals
- ACT Math: Linear Equations
- ACT Math: Functions
- ACT Math: Types of Functions
- ACT Math: Matrices
- ACT Math: Inequalities
- ACT Math: Probability, Combinations & Factorial
- ACT Math: Data and Statistics
- ACT Math: Exponents
- ACT Math: Polynomials and Quadratics
- ACT Math: Rational Equations and Expressions
- ACT Math: Sequences
- ACT Math: Complex Numbers
- ACT Math: Exponentials and Logarithms
- ACT Math: Coordinate Geometry
- ACT Math: Conic Sections
- ACT Math: Triangles
- ACT Math: Plane Geometry
- ACT Math: Lines and Angles
- ACT Math: Trigonometry
- ACT Science Reasoning: Overview
- ACT Science Reasoning: Fundamentals of Science
- ACT Science Reasoning: Evaluating Models
- ACT Reading: Overview
- ACT Reading: Question Types
- ACT Reading: Understanding Reading Passages
- ACT Reading: Word Meanings and Choice
- ACT Reading: Analyzing Reading Passages
- ACT Reading: Practice
- ACT Writing: Overview
- ACT Writing: Essay Skills
- ACT Writing: Planning and Writing
- ACT Writing: Advanced Writing Skills
- ACT Prep Flashcards