Did you know you can subtract left to right?!

This is the first online math trick Ive seen that might actually be helpful

Have you ever made a formula for exactly mirroring 2 or more digits? Its really interesting, and easy. It uses the opposite of digit sums. Where an Internal Difference is measured instead. Really fun once you get the hang of it. I classify #'s into 2 groups Greater than Less than

Wow! This is so cool.

Always wonder why more people don’t use this method - eliminates the whole regrouping or trading process and supports place value language over digit language.

@citizenstewart

Thankyou🖊📒

This is so eye opening. Thank you Howie 🙏

I have a PhD in economics and I didn’t know this!

This is cool, and useful! Wish I'd known it sooner. Thanks!

You are teaching all of us. Can't believe I didn't know this one, it is so useful!