This math trick can help you multiply any two-digit number by 11. Arlene Resendiz is TikTok's resident math whiz. When she's not working as a professional tutor, she's teaching the internet the ...

Math shouldn’t be harder than finding the last matching sock in your laundry. These clever shortcuts convert head-scratching problems into quick mental wins. You’ll conquer calculations faster than ...

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 ...

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 ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...