Free online video lessons from khanacademy
covering the practice questions in the problem-solving math section of The Official Guide for GMAT Review.

It would be best that you go through the GMAT practice test questions in the Study Guide first and then look at the videos for the questions that you might need help in.

**Questions 61-64, pg. 160 **

**Questions 65-69, pgs. 160-161 **

**Questions 70-75, pg. 161**

**Questions 76-80, pg. 162 **

**Questions 81-86, pgs. 162-163 **

Try the free Mathway calculator and
problem solver below to practice various math topics. Try the given examples, or type in your own
problem and check your answer with the step-by-step explanations.

We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.