In this video, I explain how to perform two-digit operations quickly using mental strategies. We'll cover **addition**, ...

Math Smarts: Tips, Tricks, and Secrets for Making Math More Fun! by Lynette Long, illus. by Tracy McGuinness, does just that, with clever aids such as a cardboard ""Smart Chart"" that slides to reveal ...

I've never been a math person, so when I found this viral math secret on TikTok that made sense to me and my right-sided brain, my mind was blown. Essentially it helps with percentages — and in ...

FORT LEE — For 10 seconds, a series of 50 random three-digit numbers flashed on the screen. After another second, abacus master Jeonghee Lee announced she'd finished the mental addition, correctly ...