Fractions, Decimals, and Percents GMAT Preparation Guide, 4th Edition (Manhattan GMAT Preparation Guides),   ISBN:9780982423820

Customer Rating: 

The Manhattan series was the most helpful for me on my GMAT because other GMAT prep books only shows time saving or test taking tips but does not go into details about the various topics which I needed because I don't have a strong quantitative base. In fact, I didn't know even the basic idea of number properties or even odd plus odd is even (must have been asleep in math class) and so these guides were a must for me. Except for the critical reasoning guide, I give them all five stars +++!

Too bad I found these guides too late (just 2 weeks before the exam) and by the time they arrived in the mail, I didn't have time to do any of the practice exercises but I still managed to improve my score from 500 to 640 from just skimming through these guides. 640 may not be a high score, but for someone who didn't know what a cube root is two weeks before the exam, these guides sure did a good job getting me up to speed. In my situation, these guides were heaven sent.

If you're really good with math then they might be too easy and too basic for you. Even then, they would still serve as a nice 'refresher'. They are short and concise and it only took me about an hour or less to skim through each and so they are pricey if you're just using them for a quick review. But if you don't know math like I don't know math, BUY THEM ALL!!! THEY ROCK!

However, their critical reasoning gmat guide did not go into much detail than the chapters of other verbal gmat prep guides out there and so I did not feel it's price was justified at all! The other guides costs lest than this guide and covers all the verbal topics and comes with tips as well. It also arrived after my exam date so I returned it.

Customer Rating: 

This book can be valuable to those who never did well in grammar school and high school arithmetic or to those whose rudimentry math is extremely rusty. The book covers the simplest portion of GMAT quant section(fractons, decimals, percents). As its name implies, this book covers mostly rudimentry arithmetic which is sure to bore many GMAT takers.

I have found only 7 questions which I personally found somewhat challenging. Worse yet, the real GMAT questions are signficantly (but not substantially) more difficult than the questions presented in this book.

Still, this book provides valuable review of arithmetic. I was going to grant this book 4 stars but the explanation of the answers were really dumbed down to those who would have trouble with rudimentry arithmatic. Given that I could solve most of the problems in this book in my head, I have found book's advocacy of grids to solve basic arithmatic problems to be counterproductive.

Customer Rating: 

I completely disagree with the other review, and if you do your research you will certainly come to the conclusion that ManhattanGMAT's books are a fantastic resource for the GMAT. While they are not necessarily a substitute for the class, they cover the material in great detail and include access to various practice problems online and 6 computer adaptive exams. You will most definitely need them for practice if you want to do well. The books are structured around content, not tricks, and are thus meant to teach the material from the ground up. I thought they were extremely useful. Raised my score from 630 to 740.

Customer Rating: 

I have an engineering background and I strongly suggest others with a similar one not to buy this book. I could complete this book and all of its 'exercises' in an hour. All it does is repeats very basic math knowledge which I bet you will not forget even after 50 years from now. All in all bad book for GMAT Fractions, Decimals, & Percents preparation. Now I have look for ways to sell this book which I bought two days ago... any buyers? not a scratch on the paper and is all in mint condition.