Rapid Math Tricks and Tips

With Professor Ed Julius' thirty-day Number Power Program, you'll learn how to whiz through common (and some not so common) math problems without a calculator. In fact, with the fun, easy-to-learn techniques in this book, you'll be able to master difficult problems in addition, subtraction, multiplication, and division - often in less time than it takes to use a calculator! For example, you can multiply any two-digit number (let's say, 45) by 11 simply by splitting apart the two digits, adding them, and then putting the sum in the middle (45 x 11 = 495 because 4 + 5 = 9). It's that easy!