offers hundreds of practice questions and video explanations. Start studying now.

Sign up or log in to Magoosh GRE Prep.

Archive | Estimation and Approximation (Ballparking)

GRE Quantitative Comparison Tip #5 – Estimation with a Twist

Here’s the whole series of QC tips: Tip #1: Dealing with Variables Tip #2: Striving for Equality Tip #3: Logic over Algebra Tip #4: Comparing in Parts Tip #5: Estimation with a Twist   In my last post, we solved the following question:         A. The quantity in Column A is greater B. The quantity […]

Continue Reading · 18

GRE Quantitative Comparison Tip #4 – Comparing in Parts

To set up today’s Quantitative Comparison (QC) strategy, please solve the following question:           A. The quantity in Column A is greater B. The quantity in Column B is greater C. The two quantities are equal D. The relationship cannot be determined from the information given There are several different ways to solve this question. […]

Continue Reading · 8

GRE Math Strategies Part V of VI: Estimation

Some GRE problems invite Estimation. In fact, if you find yourself immersed in irksome computations, you may want to consider estimating the answer, especially when the answer choices are numerically well spaced. Example #1: Which of the following is nearest to (A) 20 (B) 15 (C) 10 (D) 5 (E) 1 (E) is the correct […]

Continue Reading · 0