Wow. This will help me a lot. I always visualised math problems in order to solve them.
I love this!
Not too sure if it’s legit or not, but according to a youtube comment:
“The system is know as vertically and crosswise and is Vedic. Vedic Mathematics by Tirthaji, where he noted that the Vedas were complex mathematical formulas. Systems that make Trachtenberg and Meyers ‘high speed maths’ look very elementary and cumbersome.”
Here’s more in reference to that.