No Calculator? No Problem!: Mastering Mental Math [Audiobook]

In No Calculator ? No Problem! Mastering Mental Math, award-winning professor of mathematics and celebrated "mathemagician" Arthur T. Benjamin delivers 10 fun-filled lessons on how to do math in your head with confidence, accuracy, and speed - sometimes faster than a calculator.

Mental math offers numerous, lifelong advantages. Students who master mental math have a competitive advantage in the classroom and can boost their success on standardized tests and graduate school exams. Even if you've long since left high school or college, mental math can be useful everywhere, from using the ATM machine to calculating the tip at a restaurant to shopping for a mortgage. It's a skill that, at any age, sharpens the mind and makes one a better problem solver.

The first six lessons of No Calculator? No Problem! focus on the fundamentals of mental addition, subtraction, multiplication, and division. From there, you'll turn to the art of "guesstimation" for problems that don't require an exact answer. You'll learn how to:

Convert difficult addition problems into much easier subtraction problems;
Apply several, exciting mental math techniques, including oversubstraction and the cashier's method;
Master your multiplication tables through 20 and multiply two-digit numbers together;
Use mental estimation techniques to arrive at answers for large problems you can't do in your head;
Memorize, effectively, numbers important to your life, such as phone numbers and credit card numbers;
And much, much more!

By the end of Professor Benjamin's engaging, fun-filled lessons, you'll be able to add, subtract, multiply, and divide numbers faster than ever before. And with your newfound skills, you'll soon find yourself amazing other people and, perhaps more important, yourself.