Knowing how to calculate quickly, without the need of a calculator or pen and paper is a very useful skill. Whether you need to divide a dinner bill among friends, double a recipe, compute for a discount or commission, or figure out how many more pages of your textbook you have to read, knowing math shortcuts can make your life so much easier.
The 25 short cuts included in this eBook are some of the most useful in everyday life and among the easiest to master. Read through the entire book at one sitting, or try mastering one shortcut a week.
This is the eBook edition of the popular book with the same title.