Scientific American presents Math Dude by Quick & Dirty Tips. Scientific American and Quick & Dirty Tips are both Macmillan companies. Long time math fans may remember our first foray into the world ...

Excel percentage formulas can get you through problems large and small every day—from determining sales tax (and tips) to calculating increases and decreases. We’ll walk through several examples below ...

Well, for most people, it's the concept of "percentage". Finding percentages comes to use at a myriad of life events. Visit your favorite attire store, and you'll be required to calculate the ...

Percentage Calculator is one of those utility apps that you don't realize you need until you need it. The app is not your typical calculator with a numeric keypad and operators. Instead, it's a ...

Here's a math question for Danica McKellar, the actress best known as Winnie Cooper on the hit TV show "The Wonder Years": What percentage of her time does she spend acting, and what percentage ...