7 () posted 1 year ago by ValueFuckingDeep 1 year ago by ValueFuckingDeep +7 / -0 4 comments share 4 comments share save hide report block hide replies
Doesn’t work for 17x23 or 16 x 30
Wow! I have never seen this? Does is only work with the 9's times table or all of them, I wonder?
It’s called Vedic math. They are tons of videos on the internet.