A middle ground that’s particularly easy to think about is chisanbop. Each hand shows a base 10 digit where thumbs are 5 and the others are 1. https://en.m.wik

A middle ground that’s particularly easy to think about is chisanbop. Each hand shows a base 10 digit where thumbs are 5 and the others are 1. https://en.m.wikipedia.org/wiki/Chisanbop https://en.m.wikipedia.org/wiki/Chisanbop