Last time, I asked whether you know how—and when—to Work Backwards on Problem Solving (PS) problems. If you haven’t already worked through part 1 of this series, go do that [...]

Do you know how to Work Backwards on Problem Solving (PS) problems? More important, do you know when to work backwards—and when not to? To get a really high score [...]

The new Official Guide (OG) books have landed and I’ve got the scoop for you! (If you’d like, you can start with the first installment of this article series.) Today’s [...]

How are the GMAT test writers going to hide information in plain sight and get you to fall into traps? Try out this problem in our Know the Code series and [...]

The problem we’re going to talk about today is a work of art. (Yes, I’m a geek. Did you not know that already? :) ) But I’m serious: it’s a thing [...]

You’ve studied the math, but how well do you know how to decipher unusual math clues that the test writers hide in GMAT problems? To get a really high score [...]

Welcome to the second installment of our Fast Math series. (Miss part 1? Take a look here .) Here’s the basic premise: I’m always on the lookout for ways to get [...]

I don’t know about you, but I’m pretty lazy when it comes to doing math on paper. Blame constant access to Excel and the calculator on my phone … but [...]

Okay, you’ve had several weeks to practice your GMAT guessing . Let’s put your newfound skills to the test! (If you’re reading all these articles at once, stop here. Give yourself [...]

In this article, we’ll examine inequalities featuring absolute values and quadratics. While these question types are somewhat rare on the GMAT, everyone seeking a 650+ score should know how to [...]

In the last article , we examined some must-know concepts and strategies for answering inequality questions on the GMAT. In this article, we’ll explore some additional properties and strategies to [...]

Whenever I see a story problem, I immediately make myself think, “How would I solve this in the real world?” I don’t want to get sucked into doing a bunch [...]

If you’re going to do a great job on the GMAT, then you’ve got to know how to Test Cases. This strategy will help you on countless quant problems. This technique [...]

If you have two equations, you can solve for two variables. This rule is a cornerstone of algebra. It’s how we solve for values when we’re given a relationship between [...]

If you’re going to do a great job on Data Sufficiency , then you’ve got to know how to Test Cases. This strategy will help you on countless DS problems. Try [...]

Algebraic techniques can often help us solve word problems. The process typically involves assigning one or more variables, writing an equation (or two or three), and then solving that equation. [...]

Memorize what? I’m not going to tell you yet. Try this problem from the GMATPrep® free practice tests first and see whether you can spot the most efficient solution. * “If [...]

A while back, we talked about the 4 math strategies that everyone needs to master . Today, I’ve got some additional practice for you with regard to one of those strategies: [...]

Have you heard of the C-Trap? I’m not going to tell you what it is yet. Try this problem from GMATPrep® first and see whether you can avoid it: * “In [...]

Sequence problems aren’t incredibly common on the test, but if you’re doing well on the quant section, be prepared to see one. Now, you’ve got a choice: do you want [...]

We need to know a lot of different facts, rules, formulas, and techniques for the quant portion of the test, but there are 4 math strategies that can be used [...]

In the first part of this article , we talked about how GMAT quant problems are often written to imply a certain approach or solution path that is not actually [...]

The Quant section of the GMAT is not a math test. Really, it isn’t! It just looks like one on the surface. In reality, they’re testing us on how we [...]

A few months ago, I wrote a couple of articles targeted toward those students looking for a super-high score (one for quant , one for verbal ). I challenged students [...]

Last week, we discussed the overall process for Data Sufficiency . This week, we’re going to test out the process using a GMATPrep question – and take a look at [...]