Need help with Arithmetic, Fractions, or Decimals? Need help beating the clock?

Volume 1 of Master Key to the GRE is the only guide to GRE math that will teach you everything you need to know about Arithmetic, Fractions, Decimals, and time-saving Plan B Strategies.

Get a sense of how to use our books, how to study properly for the GRE, and how to access our online video content.

- 1Choosing the Right Guide
- 2Why Master Key is Special
- 3How to use our Guides
- 4Proper study habits
- 5The App
- 6Register your book

Read about the structure and scoring system of the GRE. Learn how to sign up for the exam and report your scores.

- 7The structure of the GRE
- 8The Scoring system
- 9Registering for the GRE
- 10Reporting and cancelling scores

Get an in-depth sense of how the GRE’s scoring system works and what you can do to maximize your performance on test day.

- 11How the Exam Works
- 12Strategy & Time Management
- 13The Scoring Algorithm
- 14Practice Tests

- 15Content Overview
- 16Problem Solving Questions
- 17“Select One or More” Questions
- 18Numeric Entry Questions
- 19Quantitative Comparisons
- 20Before You Get Started

Whether you’re aiming for a perfect score or a score closer to average, mastery of the following lists and concepts will help you work with numbers more quickly and easily.

- 1Introduction
- 2PEMDAS—the Order of Operations
- 3The Calculator
- 4Time—the Hidden Topic
- 5Know Your Multiplication Tables
- 6Squares, Cubes, and Special Powers
- 7Square Roots From 1 to 10
- 8Fraction to Decimal Equivalents—the “Conversion List”

Like the lists and concepts above, the following shortcuts will improve the speed of your calculations. That speed will save you valuable minutes over the course of your exam.

- 9The “Multiplication Trick”
- 10Quick Percents Chunking the Division Shortcut
- 11The Divisibility Rules
- 12Number Tricks
- 13The Addition Shortcut
- 14Subtraction by Addition

There’s no substitute for elbow grease. Practice your new skills to ensure that you internalize what you’ve studied.

- 15Problem Sets
- 16Solutions
- 17Video Solutions

Our first group of strategies contains tips for avoiding difficult or time-consuming arithmetic.

- 1Introduction
- 2Approximation
- 3“Time Suck” Problems
- 4Subtract the Common Elements!

The following sections will show you how to use the answer choices to your advantage.

- 5Backsolving
- 6WOTF Questions
- 7Check the Answers for Clues!

Picking numbers is a great way of turning confusing, abstract problems into simple, less intimidating ones.

- 8Picking Numbers
- 9PUQ's and FUQ's
- 10“Asswholes"
- 11The Hybrid Approach

Our final group of “Plan B” strategies is a small collection of tips for guessing.

- 12Split the Answers
- 13Pick a Test Number
- 14The Quantitative Comparison Guess Trick

Practice your new skills to ensure that you internalize what you’ve studied.

- 15Problem Sets
- 16Solutions
- 17Video Solutions

Whether you’re aiming for a perfect score or a score closer to average, mastery of the following concepts is essential.

- 1Introduction
- 2Adding and Subtracting Fractions
- 3Multiplying Fractions
- 4Dividing Fractions
- 5Simple vs. Complex Fractions
- 6Mixed Numerals
- 7Reciprocals
- 8The “Comparison Trick”
- 9Properties of Zero
- 10Fractions Between 0 and 1
- 11FUQ’s Fractions with Unspecified Quantities

The following concepts are either advanced or are tested only on rare occasions. If you don’t need an elite math score, don’t waste your time!

- 12“Multi-Level” Fractions
- 13Properties of Numerators and Denominators

There’s no substitute for elbow grease. Practice your new skills to ensure that you internalize what you’ve studied.

- 14Problem Sets
- 15Solutions
- 16Video Solutions

Whether you’re aiming for a perfect score or a score closer to average, mastery of the following concepts is essential.

- 1Introduction
- 2Rounding
- 3Powers of Ten
- 4Addition and Subtraction
- 5Converting Decimals to Fractions
- 6Multiplication and Division
- 7Decimals Between 0 and 1
- 8Units Digits

The following concepts are either advanced or are tested only on rare occasions. If you don’t need an elite math score, don’t waste your time!

- 9Repeating Digits Reversed Digits
- 10Converting Repeating Decimals to Fractions

There’s no substitute for elbow grease. Practice your new skills to ensure that you internalize what you’ve studied.

- 11Problem Sets
- 12Solutions
- 13Video Solutions

For many programs, GRE scores are the most important metric for admission. They’re more important than your grade point average.

They’re more important than your work experience. They’re more important than your educational background. Isn’t an exam that means so much worth the cost of a college textbook? Of course it is.

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