Solving Seven - Numberphile ( www.youtube.com )
I've been dabbling in mental divisibility rules over the past few months, but hadn't previously come across these diagrams to track the remainder. Neat trick, and kind of artistic too.
![](https://mbin.grits.dev/media/cache/resolve/entry_thumb/bd/62/bd621e2fd405830e956fee4821562bc6b4db2f392cd71441fee6f9ca34c1fa72.jpg)
I've been dabbling in mental divisibility rules over the past few months, but hadn't previously come across these diagrams to track the remainder. Neat trick, and kind of artistic too.