# Master These GMAT Math Skills

Start the year off strong by diving in to your GMAT prep with vigor (or renewed vigor, as the case may be.) The math section is often the most feared, but the quantitative content on the GMAT is definable and conquerable. Brush up on the math skills that the exam tests and pair this knowledge with solid critical thinking to be successful.

Remember, the concepts presented here are the basics of what the GMAT test. For advanced concepts and questions, the test makers have unique ways of making these more difficult.

Math Skill #1 – Arithmetic

While arithmetic is foundational in grade school (and a great deal of review for many students), you must study the fundamentals as well as the more advanced concepts. The GMAT test your ability to:

· Manipulate fractions, decimals, and ratios (as well as the need to convert among the three)

· Understand the … **Read full post**

# Top 10 Myths About Your GMAT Score—Debunked!

At Kaplan Test Prep, we talk to future MBAs every day, so the GMAT is a hot topic of conversation. Those conversations come with their share of myths that are just begging to be busted. So, to celebrate the beginning of 2015, we’re also counting down the top 10 GMAT myths … and then debunking them!

10. GMAT math is really tough.

False. GMAT math is deceptively simple—high-school-level simple. The GMAT assumes that you have mastered those basic concepts, and it challenges you to a mental duel based on them that requires critical thinking and a strategic approach.

9. I can always pull out my trusty calculator!

Sorry, but you can’t. Other than on the Integrated Reasoning section, there are no calculators allowed on the GMAT. The bad news: if you’re uncomfortable with mental arithmetic, you will struggle. The good news: no calculator means that the GMAT will only … **Read full post**

# 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 test you on is your ability to calculate and number-crunch. A simpler way of addressing this might be to ask yourself a question as you work through a data sufficiency problem: “Is this enough?” Keep this in mind as you evaluate (and on test day, avoid) two specific common errors that test-takers make while taking the GMAT.

Error #1: Combining statements when unnecessary

This is done when a test-taker looks at both statements and says “Yes, if I have both pieces of information, then I can figure out the answer, so together the statements are sufficient.” However, you must remember that you’re also asked if either statement ALONE is enough to answer the question. Understanding the differences among all … **Read full post**

# 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 question yesterday that combined Roman Numerals with properties of exponents, and got some great responses.

Take a moment to check out the question and the original blog entry on the shortcut strategy for Roman Numerals questions.

Now, let’s tackle this!

GMAT Roman Numeral Tip

Remember that when you see a Roman Numeral problem, you should think: “I should start with the answer choice that shows up most frequently so that if I can eliminate it, I can mark out the most answer choices.” This will save you time and effort. Remember, every second is valuable on the GMAT, and learning time-saving strategies is every bit as important as (some would argue even MORE important … **Read full post**

# 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 Friday’s practice question, take a look now:

GMAT Problem Solving

Roman Numeral Question

If x, y, and z are consecutive odd integers, with x < y < z, then which of the following must be true?

I. x + y is even

III. xz is even

- A) I only
- B) II only
- C) III only
- D) I and II only
- E) I, II, and III

Strategy and Tips for Solving GMAT Roman Numeral Questions

For Roman Numeral questions, start by finding the statement that appears most often in the answer choices, and evaluate it first. Therefore, if it is untrue, you can eliminate the highest number of answer choices.

In this case, … **Read full post**

# 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 insult to injury, they increase the visual clutter with Roman numerals.

What do you do when you see these questions? Do you tend to guess and move on?

We’ve got a strategy to help you master these Roman numeral questions, and we’re going to share it. However, for maximum learning value, we’re first going to have you try this practice question on your own.

Here’s a hint to help you out, though: plugging in numbers will help.

GMAT Problem Solving

Roman Numerals Question

If x, y, and z are consecutive odd integers, with x < y < z, then which of the following must be true?

I. x + y … **Read full post**

# 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 DS skills you need to solve this one…

One way to find the area of a quadrilateral is to divide it into triangles and add the areas of the triangles, which can be found using the formula for the area of a triangle: (1/2)(Base)(Height).

If you add dashed lines to the diagram connecting points A and C and points B and D, you will see that the quadrilateral is composed of 4 right triangles:

You can see that one side of each triangle is a radius of one of the circles; for example, AB is a radius of circle A and is the hypotenuse of triangle ABE. Also, you’ll notice that triangles … **Read full post**

# Free 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 bit closer and you see that it actually takes you back much further than that, to math you learned in elementary school – integers, positives/negatives, etc. One of the interesting things about the GMAT is that sometimes these throwbacks to simple math are used to create challenging critical thinking problems. The problem above is one of those.

Post your answer and your method in the comments below. We’ll share the full Kaplan explanation, with secrets for how to master GMAT Data Sufficiency, in tomorrow’s blog entry. … **Read full post**

# 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 know some approximation of how long it would take. Google Maps does all of this for us now, even taking into account traffic. But before Google Maps, if we can take ourselves back that far, we had to do some calculations. In order to figure out how long the trip would take, we needed to know the distance and make some estimates about the speed at which we would be traveling. Then we would add some extra time to account for traffic and arrive at our answer.

But let’s think about how we’d figure out our average speed. To do this, let’s imagine that we were traveling between San Francisco and LA. … **Read full post**

# GMAT 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 dive into some of the more challenging content areas. So what’s next? That’s simple, practice…over and over and over again. If you do this, you are likely to start hitting tough probability questions at some point. Along with combinations and permutations, this is a content area that the GMAT can use to up the degree of difficulty quite a bit. So let’s take a look at a tough probability question and break it down:

A fair coin is tossed five times. What is the probability that it lands heads up at least twice?

(A) 1/16

(B) 5/16

(C) 2/5

(D) 13/16

(E) 27/32

The key to solving this is the phrase ‘at least twice.’ This means that … **Read full post**

## @KaplanGMATPrep

## July 13

Road to #bschool events are around the corner. Check out the Carlson School of Management profile to get ready http://t.co/rvXWxZk5Vz #GMAT

## Kaplan GMAT Prep

## July 10

Anyone thinking about heading to the midwest for bschool? Check out this week's bschool profile, University of Minnesota Carlson School of Management: http://bit.ly/16rXsKY

University of Minnesota: Carlson School of Management

blog.kaplangmat.com

The University of Minnesota's Carlson School of Management, located in the twin cities of Minneapolis and St. Paul, has a rich history and over 50,000...