Add Yahoo as a preferred source to see more of our stories on Google. If you're down to learn something cool and quick this early in the year, a multiplication "trick" attributed to the Japanese may ...

What are you like at multiplications? Chances are if you're a mere mortal 2, 5s and 10s won't seem too taxing. But when it comes to figuring out what 42x21 is, you may wish somebody had shown you the ...

A viral TikTok video shows an old, unique way to multiply using sticks. The origins of the multiplication method aren't clear. It may come from China, Japan, or somewhere else. Whatever the roots, ...