gmat preparation courses
left image spacer Table of Contents spacer Find Classes & Tutoring spacer 24 Hour Tutor spacer GMAT Forums spacer GMAT Home spacer right image

    GMAT Math Introduction
  Section 1: Introduction  
  Section 2: The 5 Steps  
  Section 3: The 7 Techniques  
    1. Plow  
    2. Don't Do That Math!  
    3. Backsolving  
    4. Plug-In  
    5. Ballpark  
    6. Experiment  
    7. Pattern  
spacer
   GMAT Prep Course
spacer
spacer
spacer nav GMAT Guide Contents spacer
spacer
spacer nav Application Essay Guide spacer
spacer
spacer nav GMAT Essay Guide spacer
spacer
spacer nav 5 GMAT CAT Tests spacer
spacer
spacer
   GMAT Resources
spacer
spacer
spacer nav GMAT Classes & Tutoring spacer
spacer
spacer nav Use the Test Pacer spacer
spacer
spacer nav Essay Grading Service spacer
spacer
spacer nav 24 Hour Tutor Support spacer
spacer
spacer nav GMAT Home spacer
spacer
 





   
Chapter 5 GMAT Math Introduction    Section 3: The 7 Techniques
 
  Print out chapter  

The GMAT doesn’t just test math, it also tests critical thinking. The GMAT's main trick to achieve difficulty is to make questions appear more complicated than they really are. The techniques in this chapter, and in the examples throughout the Prep Guide, will give you the tools to overcome this trick.

Many of the techniques shown in this section are ways to find answers without doing all the calculations. You don't need to solve each question. You need to "think before you act" to find the right answer. The "aha!" moment occurs when you have found a question's trick (that most students do not catch). Now the question is much easier to answer.

In addition to the math, you need to know various approaches and strategies to problem solving. Answering GMAT questions depends as much on your reasoning and your use of shortcuts and techniques, as it does on your math skills.

Study your math. It’s foundational. But just studying math won’t tell you when not to use algebra.

Therefore, in addition to reviewing math, the 800Score GMAT Prep Course teaches you the methods necessary for getting the right answers. By gaining insight into GMAT math, you will be able to solve problems more efficiently and more accurately.

The GMAT assumes you can do the math, so it gives you questions that test your ability to think creatively. If you just work through GMAT math problems on autopilot, you will not be working efficiently and you will not maximize your score. The techniques presented here will enable you to identify and defeat the GMAT’s many tricks.

Below is an overview of the 7 techniques that will be explained in this section. They will also be used in examples throughout the 800Score GMAT Prep Guide.

1.

 Plow

Just do the calculations.

2.

 Don't Do That Math!

Don't be on autopilot and just start calculating. 

3.

 Backsolving

See which answer meets all of the requirements.

4.

 Plug-In

Choose some numbers and test them. 

5.

 Ballpark

Look at the answers and see how exact your calculations need to be.

6.

 Experiment

Use numbers to remind yourself of math rules and properties.

7.

 Pattern

Make a list of values and look for repeating numbers.



  GMAT Math Introduction Table of Contents
Section 1: Introduction
  Section 2: The 5 Steps
  Section 3: The 7 Techniques
   1. Plow
   2. Don't Do That Math!
   3. Backsolving
   4. Plug-In
   5. Ballpark
   6. Experiment
   7. Pattern
 
 2. The 5 Steps 3.1 Plow