Add Yahoo as a preferred source to see more of our stories on Google. 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 ...

Math isn't always about intricate procedures and drawn-out computations. These five smart multiplication strategies might help students improve their mental math abilities and solve problems more ...

Back in primary school when we were learning how to multiply two, multi-digit numbers by hand, our teacher showed us a little trick to verify that we had the correct result calculated. I was impressed ...

Add Yahoo as a preferred source to see more of our stories on Google. Math shouldn’t be harder than finding the last matching sock in your laundry. These clever shortcuts convert head-scratching ...

Before you submit an error, please consult our Video Help page. Rise and Shine is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, ...

Calculators are awesome, but they’re not always handy. More to the point, no one wants to be seen reaching for the calculator on their mobile phone when it’s time to figure out a 15 percent gratuity.

Adding some large numbers and aren't sure if you have the right answer? Here's an easy way to find out. Math can be tricky sometimes. Let's say you're adding several large numbers together, and you ...

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 ...