See Ya Later Calculator

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. Plus, it features do-it-yourself math projects, puzzles, and even a bonus section for advanced mathophiles. Get ready to tackle fun problems such as...
How to easily square any number
How to add three-digit numbers
How to use a mirror to measure the height of a building.
How to make a ruler out of a dollar bill
How to use geometry to paint walls, cut floor tiling, and do other home renovations
How to subtract numbers...by adding
And lots more...no calculator required.