### Bookshelf

Total GMAT MathJeff's complete Quant guide, on sale now! |

Total GMAT VerbalEverything you need to ace GMAT Verbal! |

**1,800 Practice Math Questions**

Buy Jeff's books at Amazon.com

GMAT Official Guide, with IR

OG Math | OG Verbal

OG12 & Quant Rev solutions!

**GMAT Question of the Day**

Beginner's Guide to the GMAT

GMAT Hacks Affiliate Program

### Categories

- General Study Tips
- Goals and Planning
- CAT Strategy
- The Mental Game
- GMAT Math Strategy
- GMAT Math Topics
- Mental Math
- Data Sufficiency
- Critical Reasoning
- Reading Comprehension
- Sentence Correction
- Analytical Writing Assessment
- Integrated Reasoning
- IR Explained
- Business School Admissions
- GMAT Prep Resources
- Practice Questions
- Total GMAT Math
- Total GMAT Verbal
- GMAT 111

## GMAT Hacks Contents by Category

**General Study Tips**

- How To Do Practice Problems
- How To Study More Effectively
- Time Management and GMAT Practice Problems
- Slow Down to Speed Up Later
- Write Your Own GMAT Practice Questions

- Avoid Careless GMAT Mistakes
- 10 Secrets of the GMAT
- Recent GMAT Problems
- GMAT Study Schedule
- Timing and GMAT Practice Strategy

- Get the Most Out of GMAT Practice Questions
- One Week Before the GMAT
- Concrete Examples and GMAT Practice
- Flashcards and GMAT Preparation
- Use "Stealth Studying" To Prepare For the GMAT More Efficiently

- GMAT Tricks and Shortcuts
- LSAT vs. GMAT
- The Three Steps to GMAT Success
- Learning Multiple Methods
- Seven Common GMAT Mistakes

- Spaced Repetition
- "Cracking" the GMAT
- Study Smart Over the Holidays
- The Ideal GMAT Study Session
- The Most Valuable GMAT Practice Questions

- Practice Tests, Just Like the Real Thing
- August 11 Chat Recap
- The Dangers of Targeted Practice
- Studying All Over the Place
- Strong, Direct, Immediate Feedback

- Video: How To Do Practice Problems

**Goals and Planning**

- What Does the GMAT Test?
- How To Avoid Burnout
- What Is a Realistic GMAT Score Goal?
- Maximize Your GMAT Readiness
- Should You Retake the GMAT?

- GMAT Practice Tests
- Will You Ever Feel Ready to Take the GMAT?
- Overprepare For the GMAT
- GMAT 700
- GMAT Scoring (Beginner's Guide)

- "I Just Bombed the GMAT"
- Score Improvement Guarantees
- How Much Does the GMAT Change Over Time?
- Commitment, Priorities, and the GMAT
- Should You Take a GMAT Diagnostic Test?

- Can You Study for the GMAT in One Week?
- It's a Marathon, Not a Sprint
- How Much Should You Spend on GMAT Prep?
- Your GMAT Test Date
- Should You Take the GMAT Twice?

- Balancing GMAT Quant and Verbal Study Time
- Video Game Planning
- Multiple GMAT Goal Scores
- GMAT 2012
- Some Hard Data for GMAT Retakers

- The Folly of Chasing a 780 GMAT Score

**CAT Strategy**

- Introduction to the GMAT Computer-Adaptive Test
- Effective GMAT Scratchwork
- Take Control of the GMAT Computer Adaptive Test
- GMAT Experimental Questions
- A Small Improvement Can Be a Dangerous Thing

- How Important Are the Last Several Questions?
- Guessing Is Always an Option
- GMAT Test Prep Briefing
- Can You Get an 800 GMAT Score?
- How Difficult is Each Question? It Doesn't Matter.

- GMAT Test Center Tip
- GMAT Scratchwork Preparation
- Feeling Good During the GMAT
- Eat Something!
- GMAT Test Centers

- What is the Ideal GMAT Split Score?
- How Important Are the First 5-10 Questions of Each GMAT Section?
- Instinctively Wrong
- Managing Your Time On the GMAT Verbal Section
- Video: Intro to the Computer-Adaptive Test

- Video: GMAT Time Management

**The Mental Game**

- GMAT Test Anxiety
- Flex Your GMAT Muscles
- ETS Guide to Reducing Test Anxiety
- Learning and Forgetting GMAT Content
- That Guy Who Got a 740 GMAT Score

- Failure and Routine
- GMAT Palm-Vein Scanning
- Sleep Well
- Is Testing Good For You?
- GMAT Test-Day Stress

**GMAT Math Strategy**

- Approximate Your Way to GMAT Math Success
- What To Memorize For the GMAT Quantitative Section
- GMAT Math's Favorite Numbers
- What Makes Tough Quantitative Questions Tough?
- The First Step On GMAT Math Questions

- GMAT Math Shortcuts
- A Mindset For GMAT Math
- Can You Use a Calculator On the GMAT?
- The Perils of Picking Numbers
- GMAT Math Content (Beginner's Guide)

- Ten Important GMAT Math Topics You Must Master
- GMAT Problem Solving
- GMAT Math Fundamentals
- GMAT Math Guessing Strategies
- Name and Conquer

- GMAT Math For Beginners
- Why Approximate?
- GMAT Probability In Perspective

**GMAT Math Topics**

- Do Weighted Average Problems Faster
- GMAT Combined Work Problems
- When the Mean is the Median
- Multiple Figures in GMAT Geometry
- Circle Inscribed In an Equilateral Triangle

- Three Overlapping Sets
- Number of Factors of a Large Integer
- Backwards GMAT Combinations
- Understanding the Difference Between Combinations and Permutations
- GMAT Probability: The Word "Or"

- Numbers With Three Factors
- GMAT Coordinate Geometry
- The Equation of a Line
- Permutations In a Circle
- Standard Deviation On the GMAT

- Dealing With Digits
- Additional Rates
- Linear Equations With Integers
- GMAT Geometry Strategy
- Rates Are Ratios

- Zero is divisible by
- Working With Remainders
- Video: OG Diag Explanation: PS #6
- Video: OG Diag Explanation: PS #13
- Video: OG Diag Explanation: DS #33

- Video: OG Diag Explanation: DS #39
- The GMAT's Central Tendency
- Changing Set, Changing Standard Deviation
- Roots are Exponents
- GMAT Mixture Problems

- How to Factor With Exponents
- A Square Inscribed in a Circle
- Video: Prime Numbers on the GMAT
- Video: Prime Factorization
- Video: Least Common Multiple

- Video: Circle and Equilateral Triangle
- Video: GMAT Absolute Value
- Video: Intro to Mean and Median
- Video: GMAT Overlapping Sets
- Video: Important GMAT Exponent Rules

- Video: Mental Math: Multiplying Two-Digit Numbers
- Video: Intro to Coordinate Geometry
- Video: Circles, Squares, and Inscriptions
- Video: Three Overlapping Sets
- Video: Three Overlapping Sets

- Video: Key Divisibility Rules

**Mental Math**

- Factor Faster
- Mental Math: Percents
- Divide and Multiply by Five ... Fast
- Mental Math: Multiply By Nine (and other numbers too!)
- Real-Life Mental Math

- Making (Some) Multiplication Easier
- Add Faster and Multiply More Rapidly With Commutativity
- Dividing and Divisibility by Seven
- Never Do Long Division Again
- Multiplying Two-Digit Numbers

- Video: Mental Math: Percents
- Estimating Square Roots
- Video: Dividing and Multiplying by Five
- Video: Multiply by Nine (Faster)

**Data Sufficiency**

- GMAT Data Sufficiency: General or Specific?
- Improve Your Abstract Thinking Skills
- GMAT Data Sufficiency: Know the Test
- Common Exponents in GMAT Data Sufficiency
- Data Sufficiency (Beginner's Guide)

- Identical Data Sufficiency Statements
- Count the Variables, Count the Equations
- Data Sufficiency Diagrams
- The #1 GMAT Data Sufficiency Trap
- Data Sufficiency is Hard

- Can Two Data Sufficiency Statements Contradict Each Other?
- The Data Sufficiency Content Surprise

**Critical Reasoning**

- GMAT Critical Reasoning: Don't Take a Flying Leap
- Identifying Scope On GMAT Critical Reasoning Questions
- Take the Drudgery Out of the GMAT Verbal Section
- GMAT Bold-Face Critical Reasoning
- Approaching GMAT Critical Reasoning Answer Choices

- GMAT Critical Reasoning (Beginner's Guide)
- True, but not Correct
- GMAT Critical Reasoning EXCEPT Questions
- The Important Parts of GMAT CR Passages
- Working With Causal Relationships

- Solve Difficult Critical Reasoning Problems Faster
- Basic Logic and the Contrapositive

**Reading Comprehension**

- How To Read GMAT Science Passages
- What Makes Tough Verbal Questions Tough?
- Book Reviews for GMAT Reading Comprehension
- Handle GMAT Reading Comprehension Passages Faster
- Reading Comprehension Passages

- GMAT Reading Comprehension (Beginner's Guide)
- Guessing On GMAT Verbal Questions
- Vocabulary Lists For the GMAT
- The Important Parts of GMAT RC Passages
- Short Reading Passages

- Stay Focused in GMAT Reading Comprehension
- What is the Author's Opinion?
- Triage in GMAT Reading Comprehension
- Video: Reading Comprehension Passage Strategies
- Video: GMAT Verbal Scratchwork

- Video: GMAT Reading Comprehension Question Types

**Sentence Correction**

- How To Study GMAT Sentence Correction
- Techniques for GMAT Sentence Correction Practice
- GMAT Verbal Scratchwork
- Sentence Correction Choice (A)
- GMAT Sentence Correction (Beginner's Guide)

- Using Sentence Correction Answer Choices
- The Most Important Parts of a GMAT Sentence Correction Sentence
- GMAT Sentence Correction Idioms
- GMAT Idiom: Less vs. Fewer
- GMAT Idiom: Many vs. Much

- GMAT Idiom: That vs. Which
- Bullet Points, Lists, and Sentence Correction
- GMAT Punctuation: The Semi-Colon
- Be Careful With "Only"
- Video: Sentence Correction Hierarchy of Errors

**Analytical Writing Assessment**

- All About the GMAT AWA
- GMAT Examples: AWA
- Using "I" In the Analytical Writing Assessment
- AWA: Conclusion or No Conclusion?
- AWA Tip: Write More

**Integrated Reasoning**

- GMAT Integrated Reasoning: Coming June 2012
- GMAT Integrated Reasoning: Graphics Interpretation
- How To Study GMAT Integrated Reasoning
- How Much Does Integrated Reasoning Matter?
- GMAT Integrated Reasoning: Two-Part Analysis

- GMAT Integrated Reasoning: Table Analysis
- How is GMAT Integrated Reasoning Scored?
- Integrated Reasoning: Official Guide Overview
- Time Management for GMAT Integrated Reasoning
- Integrated Reasoning Percentiles

**IR Explained**

- IR Explained: Q1-6: Conference Strategies
- IR Explained: Q7-9: Kenyan IPOs
- IR Explained: Q10-12: Sports Coverage
- IR Explained: Q13-18: Child Measurements
- IR Explained: Q19: City Temperatures

- IR Explained: Q20: Exam Scores
- IR Explained: Q21: Indigenous Populations
- IR Explained: Q22: Nutritional Quantities
- IR Explained: Q23: University Scores
- IR Explained: Q24: Earthquake Attributes

- IR Explained: Q25: Exercising For Hours
- IR Explained: Q26: Charting Ages
- IR Explained: Q27: Building Floors and Heights
- IR Explained: Q28: Transaction Types
- IR Explained: Q29: Baby Measurements

- IR Explained: Q30: Used-Car Sales
- IR Explained: Q31: Internet Usage
- IR Explained: Q32: Daily Shoppers
- IR Explained: Q33: Dietary Intake
- IR Explained: Q34: Territorial Populations

**Business School Admissions**

- What Business Schools Will Your GMAT Score Get You Into?
- Who's Going To Business School?
- GMAT or GRE?
- The GMAT Isn't Everything (at Harvard)
- A Different Kind of Business School Ranking

- More Business Schools Consider GRE
- Introducing GRE HQ
- WSJ Executive MBA Rankings
- GMAT Scores For Harvard Business School
- How Not To Handle a Low GMAT Score

- The GMAT and the Wharton MBA
- GMAT Scores for Chicago GSB
- 750 or Bust!
- How Often Can You Take the GMAT?
- Read!

- NYU Stern GMAT Guidelines
- GMAT and the Post-MBA Job Market
- The Average GMAT Score
- Essay Editing Tip
- UC Berkeley Haas and a Low GMAT

- How To Be Impressive
- Planning for Applications and the Revised GRE
- Stacy Blackman Application Essay Guides
- Upcoming Full-Time MBA Deadlines
- November Full-Time MBA Deadlines

- Why Participate In Extracurricular Activities?
- December Full-Time MBA Deadlines
- Getting Serious About GMAT Test Security
- The GMAT is Still King of MBA Admissions
- How the GMAT Avoids Bias

**GMAT Prep Resources**

- Resource Review: The Official Guides
- Should You Take a GMAT Prep Course?
- Resource Review: Kaplan GMAT Books
- How To Choose a GMAT Tutor
- GMAT Algebra Basics

- Your Guide to The Official Guide
- How Accurate Are GMAT Practice Tests?
- GMAT Verbal Books and Resources
- GMAT Resources (Beginner's Guide)
- Beginner's Guide to the GMAT

- Free GMAT Practice Tests
- LSAT Material For GMAT Verbal Study
- GMAT Official Guides: New Publisher and March 2009 Release Date
- Interpreting Your GMATPrep Score
- GMAT Focus Review

- GMAT Hacks Bookshelf
- The GMAT Official Guide 12th Edition is Available
- Review: The Official Guide for GMAT Review, 12th Edition
- Taking Advantage of GMAT Hacks Resources
- Guide to OG: 12th Edition Update

- Resource Review: The MBA Application Roadmap
- New: GMAT Question of the Day!
- New Editions of Supplemental GMAT Official Guides
- Get Maximum Value From Your GMAT Tutor
- GMAT Tutoring Alternatives

- Official Guide Explanations: Now Free!
- After Total GMAT Math: What Next?
- Quant Review Explanations: Now Free!
- Do You Need a Test Simulation Booklet?
- Print Versions of Three More Books!

- New: 13th Edition of GMAT Official Guide--With Integrated Reasoning
- GMAT Hacks Video Library
- An Alternative Route for GMAT Prep
- Barriers to Entry for Standardized Test Tutors

**Practice Questions**

- Choosing Effective GMAT Practice Questions
- Difficulty Level of GMAC GMAT Material
- 1,800 GMAT Math Questions!
- Difficulty Level of My Practice Math Questions
- Goodbye and Good Riddance, Scoretop

- GMAT Exponents and Roots Problem Set: Excerpt
- GMAT Arithmetic Challenge Problem Set: Excerpt
- GMAT Word Problems Fundamentals Problem Set: Excerpt
- How To Use GMAT Hacks Problem Sets

**Total GMAT Math**

- Total GMAT Math
- Total GMAT Math Excerpt: Rates
- Total GMAT Math FAQ
- Total GMAT Math: 760 Success Story
- Total GMAT Math Table of Contents

- Another 750+ Success Story
- How To Get a 770 On the GMAT
- Total GMAT Math, Abbreviated Edition
- Total GMAT Math FAQ: Difficulty
- More GMAT Success Stories

- Introducing Total GMAT Math and Total GMAT Verbal
- Total GMAT Math is Now In Print!
- How To Use Total GMAT Math

**Total GMAT Verbal**

- Total GMAT Verbal Table of Contents
- Available Now: Total GMAT Verbal
- Total GMAT Verbal Excerpt: RC Passage Structures
- Total GMAT Math and Verbal Success Story

**GMAT 111**