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While this book is missing some math needed for the GMAT, it is perfect to get you back in the swing of things if you are rusty or been away from it for a while. The website access is great and I enjoyed learning from this book. You will need to do more math after this book, but it's a great start, especially when the GMAT is based on strategy, knowing rules and how to identify them fast. You can only get this from truly understanding the basics. I am glad I spent the time on this book than pulling my hair out and wasting time in more advanced books too soon.
Overall, this is an extremely good resource for reviewing the GMAT quant methods, which will end up tripping you up, even if you know some of the harder concepts. If, like me, you needed more background and importantly PRACTICE in applying these methods, then this book will be very helpful for you as it is full of exercises to bring the point home.
I have been working with the kindle version, in which the formatting from page to page can be awkward and also some powers look like normal numbers, though most of them seem fine. This has not taken away from the value I take from the book but it's annoying so be prepared. Also, using the kindle version, when you look at the answer sheets for exercises, use the location feature to get back to the question page as the scrolling becomes extremely tedious very quickly otherwise.
Great book. Each chapter has questions all the way through to test your knowledge with detailed answers and explanations at the end of each chapter as well as more drills to test you at the end! Their explanations are so good, I've been able to work through these on my own. If you've not done maths for a while or you're not as confident in your maths skills in your GMAT prep, I'd highly recommend.
Fantastic book. Been using others to prepare and this is by far the most useful/clear. Highly recommend, if like me, you need to brush up on core maths skills before you can really make progress in the Math section of the GMAT.
It's a good book. It certainly helps with all of the things we learnt at school but need to brush up on! 4 star because I prefer the Kaplan Range, I think they're slightly better, but this book seemed to be the best option to recap on the foundations of maths.