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Irish_Dem

(81,688 posts)

6. Yes, the abacus was a hand held calculator using a decimal (10 base) system.

Reply to rurallib (Reply #3)

Sun Apr 12, 2026, 02:40 PM

Sunday

Then they could translate that into the roman numeral system.

You might want to look it up, I only know the basics of it.

I am a US military kid and growing up in Japan saw the abacus in action there quite a bit.
Very rapid complicated calculations done in an instant.

It was from the ancient Romans, Greeks, Chinese.

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How did Romans manipulate numbers with their numeral system? [View all] rurallib Sunday OP

They used a portable abacus or counting boards. Irish_Dem Sunday #1

so they were actually using a base 10 system? rurallib Sunday #3

Yes, the abacus was a hand held calculator using a decimal (10 base) system. Irish_Dem Sunday #6

Not too complicated. My fifth or sixth grade class Ilsa Sunday #5

Well... underpants Sunday #2

such a useful meme. nt BootinUp Sunday #7

I was being ironic and sarcastic but, yes, it is very useful underpants Sunday #10

I didn't know it could be done. surfered Sunday #4

There are eleven types of people in the world Abnredleg Sunday #8

... rurallib Sunday #9