Count to over one thousand using nothing but your fingers.
 
Remove these adsRemove these ads by Signing Up
Iridium7 says: Jun 2, 2009. 5:51 PM
my favorite # is 132
Feature Comment
fwjs28 says: May 26, 2009. 2:08 PM
this one is easier to understand, but the others are more in depth....i prefer this...
Feature Comment
Arbitror says: Mar 20, 2009. 1:11 PM
#4 LOL!
Feature Comment
knoxarama says: Oct 25, 2008. 1:47 PM
how to count in binary

this is more detailed
Feature Comment
Deering says: Dec 20, 2007. 5:22 PM
so let's say there are 6 fingers, would the sixth one be 32?it confuses me so much... From what i understand, to some people binary comes to people naturally while others have to learn it.That and a fun fact is that certain puzzles are based on binary,you have to fugure wich ones have to be on (1) and off (0) at the right time and after a while you notice a pattern...
Feature Comment
knoxarama in reply to DeeringOct 25, 2008. 1:42 PM
yes, because the other five together are 31
octavian234 in reply to DeeringJul 16, 2008. 9:36 PM
yes. all you do is take the previous number and multiply it by 2. when you want to write letters you would write in bits or sections of eight
casey321b says: Oct 19, 2008. 6:04 PM
omg a cartoon flipped me off. you 4er!!! really that shouldn't be posted i think. there is no such thing as four anymore
Feature Comment
uffabrew says: Oct 16, 2008. 6:11 AM
The poster/cartoon is nice but seriously flawed. Using all ten fingers and all ten toes would result in 1,048,575 possible combination. Assuming you started counting at zero. I don't know how the cartoonist missed the other 8000 combinations. iMaybe the small toes are worth a little less........1,040,575 is not 2 to the 20th power. 2 to the 20th is 1,048,576, ie One Megabyte. Good job "Spiff" you get the A for the day for pointing out the error!
Feature Comment
icedog515 says: Feb 15, 2008. 1:16 PM
lmao.
Feature Comment
bigpinecone says: Dec 27, 2006. 3:41 PM
my new favorite number is 4...
Feature Comment
112251919112 in reply to bigpineconeDec 11, 2007. 6:27 PM
hohoho
112251919112 in reply to 112251919112Dec 11, 2007. 7:11 PM
i tought binary was like, 10010111010101101101101110100010100101010?
DarkOneSS in reply to 112251919112Jan 15, 2008. 4:16 PM
it is. in this instance each finger represents a 1 when it is up and a 0 when it's down. so 0000000000 = 0, 0000000001 = 1, 0000000010 = 2, 0000000011 = 3 and 0000000100 = 4. Understand? So that would make your number 1,299,994,592,554.
112251919112 in reply to DarkOneSSFeb 11, 2008. 7:15 PM
yeh, I figuered that out at dinner
copycat-42 says: Nov 23, 2007. 10:11 PM
frederick pohl wrote an essay about this. "how to count on your fingers" it was at the end of the his short-story collection "digits and dastards".
Feature Comment
jerielng says: Feb 23, 2007. 12:45 PM
Look ma, 4!
Feature Comment
zachninme says: Nov 14, 2006. 2:31 PM
Base 3 should be possible, Up = 2, bent =1, and down=0...
Feature Comment
kennytatheguy says: Oct 28, 2006. 5:15 PM
number... four.... LOL.. well, anyway, thats great, i never knew binary and it always confused me.
Feature Comment
Crash2108 says: Sep 11, 2006. 7:12 PM
Just don't tell your 4 year old how to tell his age on his fingers.
Feature Comment
mewantbigboom says: Aug 11, 2006. 8:46 PM
is it appropiate counting to 4 like this?
Feature Comment
savagenarce says: Jun 16, 2006. 2:33 PM
Maybe I'm missing something, or maybe I'm just becoming a grouchy old fart, but it seems I can count as high as I want without using my fingers, toes, or any other appendages. 1-2-3-4...a billion and one, a billion and two...
Feature Comment
ICeSpliCe says: May 3, 2006. 4:38 AM
I used to do this when I was a wee child. One of my friends fathers taught us when were around 5 years old. I still use it when I need to add large numbers up. Sometimes people look at you funny, but who cares! I love it. Very glad to see that its being passed on. :):):)
Feature Comment
pelrun says: Feb 21, 2006. 1:09 AM
If someone is able to individually control their toes, wow! I can only manipulate the smaller toes on each foot as one unit.

That means four extra bits, and therefore a maximum count of 214 = 16383.

I've counted binary on my fingers for as long as I can remember. Zero to three are the critical maneuvers as your index finger and thumb perform the same motion continuously - the faster you can do that, the faster you can count. The other fingers aren't much of a challenge after that... although it helps immensely with the more difficult numbers if you use your thumb to hold the other downed fingers.
Feature Comment
erikabuentello says: Feb 11, 2006. 8:41 AM
super cool. I really love this.
Feature Comment
spinach_dip says: Feb 3, 2006. 3:33 PM
Meh
Feature Comment
spiff says: Feb 3, 2006. 1:08 PM
The fingers and toes panel number should be 1,048,575 (which is 220 - 1). You accidentally turned the 8 into a zero.
Feature Comment
courtarro says: Feb 3, 2006. 12:34 PM
That might be dangerous! Make sure your son doesn't go around showing everyone how he can count to 4! Or even worse, 132!
Feature Comment
LordVorp says: Nov 6, 2005. 8:57 PM
This is amazing... I showed my 6-year old how to do it and he picked it up in just a day! With just a tiny bit of coaching, we've already introduced hexadecimal, and it seemed a natural, simple extension. THANK YOU!!!!
Feature Comment
Pro

Get More Out of Instructables

Already have an Account?

close

PDF Downloads
As a Pro member, you will gain access to download any Instructable in the PDF format. You also have the ability to customize your PDF download.

Upgrade to Pro today!