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On the GMAT, Use Primes to Crack Big Numbers
Everyone studying for the GMAT wants to identify the skills that will lead directly to the greatest point increases. While this can be difficult to do, given the adaptive nature of the exam, some...
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GMAT Studying: Correct Answers Can Be a Bridge to Success.
For about a year, I always used the same method to solve the following GMAT problem: How many liters of water must be evaporated from 50 liters of a 3 percent sugar solution to get a 5 percent sugar...
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GMAT Challenges: Finding My Achilles’ Heel
Greetings, I would like to announce that I have officially figured out that my biggest challenge on the GMAT is translating word problems into workable equations that allow me to get to the right...
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GMAT Word Problems Unravelled
Sometimes, you’ll come across a GMAT problem that gives you a lot of information. The relationship between the pieces of information may not even be clear at first. In my experience as a GMAT...
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GMAT Average Speed Problems
Imagine you are driving from Chicago to Los Angeles, and you want to know what your average speed needs to be to reach Los Angeles in a certain number of hours. You would probably start by determining...
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GMAT Fences
In my years of teaching, I’ve seen all kinds of clever solutions to GMAT math problems. I’ve also seen all kinds of errors. Some are utterly bizarre—and fortunately, seldom repeated, because the...
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GMAT Ratio Problems: Avoid the Algebra
Mastering ratio questions on the GMAT requires systematic organization of the individual pieces and a solid understanding of how ratios are typically presented and tested on test day. One of the most...
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GMAT Rate Conversions
One of the simplest arithmetic rules is that when you divide something by itself, you get 1. What’s 3/3? 1. What’s x/x? 1 By the same logic, what do you get with, say, inches/inches? That’s also equal...
View ArticleGMAT Math Shortcuts: Percents
28% of 25 = 25% of 28 = 2.8 x 2.5 = 7 This always works. 30% of 50 = 50% of 30 = 3 x 5 = 15 Want more #GMATMathTips plus more? Follow @KaplanGMATPrep on Vine! Or make you’re own tips and mention us...
View ArticleGMAT Math Shortcuts: Dividing by 4 (Vine Video)
A number is divisible by 4 if the last two digits are divisible by 4. For instance, we know that 358,912 is divisible by 4, because 12 is divisible by 4. Want more #GMATMathTips plus more? Follow...
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GMAT Problem Dissection: Combinations and Permutations Part 2
Photo Credit: burtonwood + holmes via Compfight cc A couple of weeks ago we started our exploration of GMAT combination and permutation questions. For those who are just getting started, that initial...
View ArticleGMAT Math Tips: Dividing by 6 (Vine Video)
A number is divisible by 6 if it is also divisible by 2 & 3. For example, 48 is divisible by 6 because 48 is divisible by 2 & 3: 48/2=24 and 48/3=16. Want more #GMATMathTips plus more? Follow...
View ArticleGMAT Problem Dissection: Probability Part 2
Alright, you've been studying the GMAT basics. You understand what is really being tested along with the problem types, methods, and strategies. You've even memorized all the basic formulas and taken a...
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Average Speed Problem Breakdown
Ok, let's dive in and pull apart another GMAT problem type, average speed questions. Most of us have done a road trip at one time or another. Before we set out on the journey, we probably wanted to...
View ArticleFree GMAT Question of the Week: Discover Data Sufficiency!
GMAT Question: If b ≠ 0 and a > b, is a > c? (1) a/b> c/b (2) 5ab > 6bc From a cursory glance, you can see that GMAT math takes you back to concepts that you learned in high school. Look a...
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GMAT Data Sufficiency Practice Question – The Solution
Did you try out our GMAT Data Sufficiency practice question? If not, take a couple minutes now to give it a try before reviewing the explanation. Now, let’s get down to brass tacks on the Geometry and...
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GMAT Problem Solving: Roman Numeral Questions
Have you seen these problems as you study for the GMAT? You know the ones I'm talking about - they have so many components that you put up a mental block almost the second you see them. And to add...
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GMAT Problem Solving: Tips for Roman Numeral Questions
It's finally time! You've waited all weekend for it, and we're finally going to share the solution, and more importantly, helpful tips for dealing with GMAT Roman Numeral questions. If you didn't see...
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GMAT Roman Numerals Questions Revisited
We covered GMAT Roman Numerals questions recently, and like any good teacher, I want to review this topic again to help solidify it in your mind. So, we challenged students on Facebook with a practice...
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The Two Most Common Errors in GMAT Data Sufficiency
GMAT data sufficiency questions test your ability to analyze a quantitative problem and recognize which information is necessary to figure out the solution. What a data sufficiency question does NOT...
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