Here are ten tips to help you crunch numbers in your head. Mental math isn’t as difficult as it might sound, and you may be surprised at how easy it is to make seemingly impossible calculations ...

Today we're going to kick things off by learning 5 tips that will help you multiply numbers quickly in your head and become the mental math wizard in your family. Tip #1: Multiplying by Powers of ...

I could see the suggested tips weren’t printed at the bottom ... calculator to calculate the tip and new total. He did mental math and I found it weirdly hot. Immediately, I felt my cheeks ...

But by the time she reached adulthood, Devi’s mental math would wow not ... that teach her methods, but her techniques for simplifying math were never really picked up by mainstream schools.