Like math? Like puzzles? Then meet Bojagi, a game created by David Radcliffe (@daveinstpaul). It looks simple enough. A grid has a few numbers in it. The goal is to draw a rectangle around each number ...

Calculators are awesome, but they’re not always handy. More to the point, no one wants to be seen reaching for the calculator on their mobile phone when it’s time to figure out a 15 percent gratuity.

Add Yahoo as a preferred source to see more of our stories on Google. Sorry, it’s math time. But these are some of the easiest math quizzes we’ve ever put on ...

To keep your child's math skills sharp, and to help you hang on to your math abilities, try doing some calculations every day. Simple ones to try include racing the cash register to determine the ...