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   GMAT Math Introduction
Chapter 1: Introduction
Chapter 2: 8 Math Strategies
1. Plow
2. Don't Do That Math!
3. Backsolving
4. Plug-In - Testing Numbers
5. Ballpark
6. Experiments
7. Find Patterns
8. Ladder of Difficulty
Chapter 3: 5-Step Method
   
   
   
   

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   2. Don't Do That Math! (ADVANCED)
Table of Contents  
 



You have 75 minutes to answer 37 questions. This means that you have about 2 minutes to answer each question and you can't use a calculator. in addition, the dry erase paper isn't suited to writing out complex calculations. As a result, you simply don't have the time or the means to do highly tedious calculations, so they must be avoided.

Keep in mind that the GMAT is a test of intelligence, not an attempt to determine if you are a human calculator. So Mr. GMAT doesn't want you to waste 10 minutes doing calculations. Mr. GMAT is more concerned with your ability to find tricks and shortcuts. The result of these factors is that questions will almost always have shortcuts (visible only to the brightest students) designed so that the question can be answered in a fraction of the time.


What is the sum of numbers from 1 to 100, inclusive?


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1. Plow