Crosswise multiplication. It's a technique in Vedic Mathematics, which has a large number of 'shortcut' or 'trick' techniques in it.
The problem is that this technique is very bad when dealing with large individual numerals. I believe there were other multiplication techniques available though...
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
momijizukamori
no subject
Date: 2010-May-02, Sunday 13:02 (UTC)The problem is that this technique is very bad when dealing with large individual numerals. I believe there were other multiplication techniques available though...