Number Properties GMAT Preparation Guide, 4th Edition (Manhattan GMAT Preparation Guides),   ISBN:9780982423844

Customer Rating: 

This and all the other Manhattan GMAT guides were really helpful in helping me prep for the GMAT. My colleagues had recommended them over other guides and I continue to do the same after getting the score I needed on my first try.

Customer Rating: 

For anyone who needs to refresh themselves on the basic number properties. This study guide will save you precious time on the test by offering short cuts and skill building exercises.

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!

Customer Rating: 

this is not worth for the money, you should get something better if you are targeting for scoring above 700.

Customer Rating: 

The Manhattan GMAT quantitative guides are great for reviewing or just flat out learning the quant concepts tested on the GMAT. Don't let the thinness of the books fool you; they efficiently pack in alot of material and do not pad the books with lots of practice questions created by them. It's far better to work off of Official Guide questions, and each Manhattan GMAT guide has a handy list of all OG questions subdivided into Problem Solving & Data Sufficiency, and further subdivided according to the concept tested. There is an additional problem set of the most challenging OG questions spanning all concepts. I am decent, but rusty at math, and after using a couple of the Manhattan GMAT quant guides, was able to improve my quant score from high 40s on practice tests to 51 on the real thing! I can't recommend these books enough.