Get the latest tech news
Japanese multiplication method and other ways to multiply (2020)
You have to try it.
While the user, jesslouisec, calls the method Japanese multiplication and some mathematicians say it’s “Vedic multiplying,” its real origins aren’t exactly clear. By any name, it’s a graphical version of the way many American children and others around the world learn to multiply, and for the right kind of numbers, it can allow people with very minimal math literacy to find the answers. If they could break problems into actual physical pieces they could arrange and count, that was easier, faster, and required less brute force memorization even in the short term.
Or read this on Hacker News
