Jeff began as a star tutor and classroom teacher for a big test-prep company. Since , he has focused on developing the best materials in the industry, saving you time, money, and stress. Rarely does such a book provide an thorough strategy for studying, preparing, and attacking the entire test. Broken into bite-size chapters, it walks you through the entire process, from determining a goal score, to encountering Data Sufficiency for the first time, to handling the stress of exam day.
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This is a huge additional resource of GMAT sample questions. Over the past two years there has been an explosion of new books and online courses designed to help students improve on the exam.
Of course, there are also standard textbooks available, and these materials can be just as effective. Sackmann includes literally every sub-topic of math for the GMAT.
As a result, the book is extremely comprehensive. Of the pages, are content and are explanations. I was impressed by the organization of the book. Each sub-topic is divided into three parts: first, an overview of how to solve that question type; second, a question drill that reinforces the concept; third, a set of GMAT sample questions in the actual format of the exam including answer choices A-E.
Some readers may find the beginning of the book too basic — it starts with overviews of arithmetic and algebra. I know from experience that many students struggle with decimal multiplication and division, so this section should be very helpful for saving time and preventing careless errors. The questions themselves are very good, and they have the most important characteristic of GMAT sample questions: they closely model questions from the Official Guide.
The problem with the OG is that there are a limited number of questions and the explanations are often poor. Sackmann has based many of his problems on Official Guide questions, but his explanations are longer and much more comprehensible. The book starts to get really good later on. I noticed that Sackmann devotes extra time and practice questions to topics that appear more frequently on the exam, such as GMAT Work problems and Number Properties problems.
Every topic has at least GMAT-like sample questions.
Total GMAT Math