## Articles by Knewton

#### GMAT On Demand: Testing Cases in Data Sufficiency

In this video, Jess and Rich talk about “testing cases” in Data Sufficiency problems—i.e. coming up with example numbers and trying them out to see what happens. As Jess explains, the key with testing cases … Read More

#### GMAT On Demand: Ratios 101

In the fifth and final installment of Knewton’s Intro to GMAT Quant Lesson, expert teachers Jess and Rich give you a chance to try out some tricky Data Sufficiency questions involving ratios. They’ll also … Read More

#### GMAT On Demand: Intro to Fractions

In the fourth installment of our Intro to GMAT Quant lesson, Knewton teachers Jess and Rich give you a solid introduction to fractions on the GMAT. Get (re)acquainted with proper and improper fractions, mixed numbers, … Read More

#### GMAT On Demand: Percentages, Ratios, and Decimals

In part three of Knewton’s Intro to GMAT Quant lesson, Jess and Rich provide a primer on percentages, ratios, and decimals on the GMAT. They start with the basics—like the difference between “percentage … Read More

#### GMAT On Demand: Intro to Data Sufficiency

In part two of Knewton’s Intro to GMAT Quant lesson, Jess and Rich walk you through the fundamentals of Data Sufficiency. Learn the two main types of DS questions you need to recognize on test day, and be sure to … Read More

#### GMAT On Demand: Intro to Quant

Today we’re starting another lesson in our Knewton on-demand preview series! Up this week: Intro to GMAT Quant. (If you missed our SC tips, check them out here). In this video Jen and Rich walk through some of the … Read More

#### Breaking the Code: Applications

Here’s a pop quiz: What are the top 5 personality traits shared by most MBA students? At Knewton I give tons of advice about applications. At any given time, I probably have a few dozen conversations going on with … Read More

#### 7 Benefits of Online GMAT Prep

Figuring out how to structure your GMAT prep can be a tough decision. Some people are sure that they need private tutoring or in-person prep classes; others are confident that an online course or self-studying is the … Read More

#### GMAT Tips: The Merits of Memorization

During your entire educational career, teachers have probably told you the same, shopworn motto: Deep Understanding is more important than Memorizing Facts. You always knew that this was silly—those teachers would … Read More

#### Fun with Probability and Combinatorics

Rich Zwelling is one of the expert teachers in Knewton’s GMAT course. “Combinatorics” is a word he throws around casually. – I was recently discussing a particular GMAT problem with a friend, and as so often … Read More

#### Critical Reasoning Tip: What’s the Difference Between a Conclusion and an Argument?

Recently, a few of our students had some questions about the following Critical Reasoning problem. Let’s take a closer look at the argument and the options and figure out why this question is trickier than others: … Read More

#### More Fun with the Denial Test: Try This Tricky CR Assumption Question

In an order post, I covered the theory behind the Denial Test for Critical Reasoning Assumption questions and demonstrated how to do negations properly. If you’re not sure what the Denial Test is or want a … Read More

#### The Denial Test: A Must-Know Strategy for CR Assumption Questions

Critical Reasoning Assumption questions ask you to identify an unspoken assumption made by the argument’s author. On these types of questions, one of the most powerful techniques you have at your disposal is the denial … Read More

#### The AWA Isn’t That Important… So Can I Blow It Off?

I want to take a moment to address some common confusion about the Analytical Writing Assessment (AWA) portion of the GMAT exam. As many of you inveterate students know, the AWA portion involves two essays, and you get a … Read More