Numberphile revived an ancient multiplication trick—halves and doubles—also called Egyptian or Russian math, where you repeatedly halve one number and double the other. After crossing out rows with ...

If you’re not sure how to wrap a present, there’s an easy hack you can try. The clever trick—wrap diagonally, not horizontally or vertically—is based in math. Basic geometric principles explain how it ...

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

Jason Fernando is a professional investor and writer who enjoys tackling and communicating complex business and financial problems. The market approach is a method for determining the value of an ...