# Uh-Oh, I Don’t Know This GMAT Question…What Now?

- Jul 23, 13:42 PM   Comments [0]

Picture this: It’s the day of your GMAT. You’re cruising through the Quant section, you’re feeling pretty good about things...and then up pops a doozy of a GMAT math question. It catches you off guard and you’re not quite sure what to do. You start...

# Data Sufficiency: Before you pick C…

- Nov 15, 09:00 AM   Comments [1]

To succeed on the GMAT, there is a general rule of Algebra that you should know: to solve for all variables in a system of equations, you need as many distinct linear equations as variables. So if you get 2 variables, you need two...

# Should I use Combination or Substitution?

- Nov 12, 09:00 AM   Comments [0]

You might remember back in the day in Algebra class that you learned how to work with systems of linear equations. These are problems when you have multiple equations and multiple variables, and you have to find a way to solve for each variable....

# First steps in prepping for GMAT Quant: Practice your Math Foundations

- Nov 2, 10:00 AM   Comments [0]

Basic math content knowledge, such as the formula for the area of a triangle or the equation for calculating an average, is often the wolf in sheep’s clothing on the GMAT – test takers who lack proficiency in the basics find it very challenging to...

# “Two Trains leave the station…” (Dealing with multiple rates questions)

- Oct 30, 10:00 AM   Comments [0]

Before students begin studying for the GMAT - before they even know anything about it beyond that it tests math and verbal - one question type worries students more than any other: a question about two trains traveling on parallel tracks. Every time I start to...

# Prime Factors

- Aug 26, 04:00 AM   Comments [0]

1,960 = 49 x 16 x y. What is the value of y? When most testtakers encounter problems such as the one above, they have a predictable, yet incorrect, reaction. Most people fret when faced with large numbers that would take more than two minutes to...

# Re-learning Ratios

- Aug 21, 04:00 AM   Comments [0]

The key to ratio problems on the GMAT is to remember all of the different ways a ratio can be written. Most students are used to seeing ratios denoted by a colon; the ratio of 3 to 5 would be written as 3:5. ...

# Math vs Verbal Study Time

- Aug 19, 04:00 AM   Comments [0]

If you have a limited amount of time to study, you are probably unsure of how to divide your time between the math and verbal sections. In determining how to split up your study time, there are a few factors that you should consider. Above...

# Extremely Challenging GMAT Questions from Knewton

- May 17, 05:24 AM   Comments [0]

Check out these two extremely challenging GMAT questions -- one math, one verbal. Answers will be discussed by our expert team of teachers in our interactive classroom live on Monday night at 9pm EDT. One lucky student will receive the Knewton GMAT course free during...

# GMAT Prep Tip: Prime Numbers and Factors @Knewton

- May 6, 12:31 PM   Comments [0]

If you’re thigh-deep in your GMAT prep (or still remember some of your math from high school), chances are you’re already familiar with the “factor rainbow” method of listing any number’s given factors. For example, if we were to list all the factors of 60, we...