See Ya Later Calculator ─ Simple Math Tricks You Can Do in Your Head

A lot of us hate math, but that's just because we don't remember much of it from high school or we think it's too hard (which is probably why we've forgotten it). But who needs it, when you've got a calculator, right? Wrong. We all use math everydayto calculate a tip, to figure out an interest rate, to estimate the cost of the groceries in your cart, etc. Math doesn't have to be hard. It can be easy, fast, and even funif you know how to do it all in your head.

See Ya Later, Calculator demystifies numbers and math. With these simple, precise, and downright magical math tricks, readers can do everyday math faster than it takes to dig out their phone and find the calculator app. Clear, step-by-step, easily memorizable directions demonstrate more than 125 math operations anyone can do in their head, such as:

How to easily square any number
How to add three-digit numbers
How to multiply two-digit numbers
How to subtract large numbers

And lots moreno calculator (or pencil and paper) required.

Portable Press is a tight-knit group of writers, researchers, and editors who are responsible for some of the publishing industry’s most popular non-fiction trivia and facts books. Aside from creating the fan-favorite Uncle John’s Bathroom Reader series (more than 16 million books in print since 1988), the Portable Press team also specializes in regional and kids’ titles, plus gift books, activity books, and whatever else strikes their fancy. They are based in Ashland, Oregon.