Clear, concise compendium of about 150 timesaving math short-cuts—faster, easier ways to add, subtract, multiply and divide. Each problem includes an explanation of the method, a step-by-step solution, the short-cut solution, and proof and an explanation of why it works. No special math ability needed.

5 Responses to “Short-Cut Math”

1. Richard Gill says:

   February 2, 2010 at 12:00 am

   I like it even if it does not mention the “rule of 9’s” or “chisenbop”.
2. David E. Woods says:

   October 8, 2009 at 12:00 am

   I liked this book because it showed me how to approach simple math problems in flexible ways. In short, the techniques were like many algebra problems I had dealt with; if you don’t like the form or layout of a problem, change it to something simpler or nicer or else think of it in a different way.
3. dhbuyer says:

   September 12, 2009 at 12:00 am

   Great seller. Book was in exact condition as described. No problems. Shipment was fast. Would definitely do business with again.
4. S. Erasani says:

   July 25, 2009 at 12:00 am

   Very well written, Simple techniques. Very fun to read and brush up on basic skills.
5. Richard M. Rollo Jr. says:

   December 29, 2007 at 12:00 am

   What a great little book! If you are like me, doing most of your math through computers, you may find the need to go back and brush up on the fundamentals. For me, one of the most valuable sections was on how to set up a columnar addition problem to work it left to right. I can do long division, algebra….you name it…but I have had problems adding columns of numbers in the conventional manner. Perhaps its a form of dyslexia. Anyway, Kelly shows you how to work the problems left to right, which I found helpful. His explanation of aliquot relationships was better than I got in junior high.

   I like the emphasis on learning to work the problem to the level of precision you need. Say, if your house is so many square feet rounded and you want to find out how much paint will cover the surface, you may require 5.452 gallons of paint, but you’ll have to buy 6 gallons from the store. So what’s the point of the precision?

   This book is exceptionally well written. Each problem is worked out or resolved completely. When I used it, I covered up the answers and worked each problem. I spent no more than 20-30 minutes a day to keep it fresh and drudgery free.