Ever dreamt of solving math problems in your head with the speed of a calculator? Mental math might seem challenging, but it's a skill attainable through the right tools and techniques. The abacus, an ...

Flipping through a deck of cards in the library as her friends and classmates slough through books and papers means that, sometimes, people want answers from Carolyn Chen. "I usually have to reassure ...

Converting between kilometers and miles becomes effortless with these mental math tricks. Learn to quickly estimate distances for everyday scenarios, from understanding international content to ...