Arithmetricks: 50 Ways to Add, Subtract, Multiply, and Divide Without a Calculator
Author: Edward Julius Retail Price: $16.95 Our Price: $15.26
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Packed with 50 tricks and tips that let you add, subtract, multiply, and divide in a flash, Arithmetricks makes math easier and more fun than you've ever imagined. You won't need a calculator, or in many cases even a pencil, to come up with the correct answers. Just a few simple shortcuts will have you solving basic problems in record time. Arithmetricks will not only amaze you, it will also help you at school and in your daily life. Most of all, you'll have plenty of fun along the way!