69
Chisanbop (finger math)
(en.wikipedia.org)
🤙🤚
65
Nope, 69!
That's not a five...
Pretty interesting. I've seen counting with using your fingers as binary digits before, which will let you count up to 512, but this being usable for math is really cool.
You can get to 1023 with binary fingers, assuming you have all your fingers.
Oh yeah you're right, I was just thinking of 2^9
Anytime!
Wow. I like that a lot. Have you done that or is this just a thought?
Ive tried but I don't really have a use case in my day to day life beyond counting to 30 after that I'd rather keep paper records so I don't lose count.
Finger abacus.
I like this, it's so logical it seems obvious but I've never counted this way. Being able to count up to 100 and easily do basic arithmetic is great while being easier to manage than trying to calculate binary on my fingers (for me). Im gonna start using it.
I have done this for years without knowing that there’s a name. Having the visual should make it a lot easier to explain to others. I do it on the opposite hands, but otherwise it’s basically the same. I guess it’s pretty much common sense, but I had a devil of a time showing others how to use it.
this post was submitted on 14 Jul 2025
69 points (97.3% liked)
Wikipedia
3442 readers
166 users here now
A place to share interesting articles from Wikipedia.
Rules:
- Only links to Wikipedia permitted
- Please stick to the format "Article Title (other descriptive text/editorialization)"
- Tick the NSFW box for submissions with inappropriate thumbnails
- On Casual Tuesdays, we allow submissions from wikis other than Wikipedia.
Recommended:
- If possible, when submitting please delete the "m." from "en.m.wikipedia.org". This will ensure people clicking from desktop will get the full Wikipedia website.
- Use the search box to see if someone has previously submitted an article. Some apps will also notify you if you are resubmitting an article previously shared on Lemmy.
founded 2 years ago
MODERATORS