### Decoding Divisibility and Prime on the GMAT – Part 1

Most of my students are driven crazy by GMAT Number Properties. On the face of it, the topic seems straightforward: I know what positive and negative, odd and even are. Divisibility stuff is a little more complicated, but come on: this was taught in school when we were 10! How hard can it be? Read more

### Here’s Why You May Be Misinterpreting Your GMAT Score

Here’s a scenario that might seem familiar to many of you: you take your first GMAT practice test, then you see the score. Ouch! Probably lower than you were hoping for, right? Read more

### Two Minutes of GMAT Quant: A Breakdown – Part 1

Two minutes is not a huge amount of time. Yet if you want to finish the entire GMAT Quant section in 75 minutes, two minutes is about all you have to solve each problem. Don’t interpret that to mean you just have to go quickly or skip important steps like checking your work. Instead, seek out a more efficient process for dealing with GMAT problems.

Better yet, read along as I detail an efficient process for dealing with your two minutes. Read more

### Here’s What to Do When You Don’t Know What to Do on the GMAT

You’re staring at a GMAT problem that you just don’t understand. There’s a minute left on the clock. *What do you do?* Read more

### Here’s How to do GMAT Unit Conversions Like a Pro

Sometimes the whole point of a specific GMAT problem is to convert between miles and kilometers, or meters and centimeters. In other problems, you’ll need to do a unit conversion as part of a longer solution. It’s easy to mess up unit conversions, and the GMAT writers know this — they include them on the test in order to test your level of organization and your ability to double-check your work. Here’s how to add fast unit conversions to your repertoire of skills. Read more

### Here’s How to Avoid Calculations on GMAT Quant Problem Solving

Last time, we talked about how to avoid annoying calculations on Data Sufficiency. It’s not so surprising that you can do this on DS, since you don’t “really” have to solve all the way on this question type.

But you can avoid annoying calculations on Problem Solving, too! Try this problem from the GMATPrep® free exams to learn how. Read more

### Three things to love about GMAT Roman numeral problems

I. Roman numeral Quant problems aren’t a whole lot of fun.

II. A lot of my students choose to skip them entirely, which is much smarter than wasting five minutes wondering what to do!

III. However, it’s possible to turn this rare and tricky problem type into an opportunity.

Read on, and learn why many GMAT high-scorers love Roman numeral problems. Read more

### GMAT Story Problems: Draw It Out

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 of annoying textbook math. In the real world, we lay things out on paper very differently than when we’re in “I’m taking a math test” mode.

Want to see what I mean? Try this GMATPrep® problem from the free exams and then we’ll talk! Read more

### Here’s why you should interleave your GMAT studies (and what that means)

*Recently, I wrote a post about how to get the most out of Official Guide (OG) problems during your studies. In that article, I discussed the concept of Interleaving your studies and I’ve got more to say on this strategy that’s of crucial importance to your studies.*

### What is Interleaving?

In a nutshell, interleaving is a way of mixing up your studies. For example, let’s say that you’re about to start studying the Fractions chapter of our Fractions, Decimals, & Percents (FDP) Strategy Guide. It’s only 8 pages long, so you should just read the whole thing straight through, right? (Note: if you actually have this guide, pull it out right now and follow along below.) Read more

### Avoiding Calculations on GMAT Data Sufficiency

The beautiful thing about Data Sufficiency is that we’re allowed *not* to do all of the calculations that a Problem Solving problem might require. Still, leave it to the GMAT to try to suck you into doing more than you need to do in order to get to the answer.

Normally, I just toss you into a problem and then we discuss, but today I’m going to warn you: the GMATPrep® problem that I’m about to give you is going to do its best to make you waste time. As you try this problem, ask yourself, “Do I *really* need to do that calculation? Is there an easier way?”

Try this problem from the GMATPrep free exams. Read more