The traditional counting system used in the Welsh language is vigesimal, i.e. based on twenties as in the French numerals for 60-99, where numbers from 11–14 are "x on ten", 16–19 are "x on fifteen" (though 18 is more usually "two nines"); numbers from 21–39 are "1–19 on twenty", 40 is "two twenty", 60 is "three twenty", etc.

There is also a decimal counting system, which is widely used, especially in Patagonian Welsh[citation needed], where numbers are "x ten y" unit(s), e.g. thirty-five in decimal is tri deg pump (three ten five) while in vigesimal it is pymtheg ar hugain (fifteen – itself "five-ten" – on twenty).

The above is from Wikipedia. What Wikipedia does not tell us is that the decimal system rather than the traditional method is in everyday use in schools.

Bill

On 20 April 2013 13:08, Stephen Rice wrote:

> By the way, Danish has nearly the
> same system with tens. They say 50
> and then 3 times 20, and 70 is 4
> and a half times 20, and 80 is 4
> times 20.

Technically English has this as an option at least. Thus in the
opening of Lincoln's Gettysburg Address, "four score and seven years
ago" renders French "quatre vingts sept" almost verbatim.

Steve

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Pat and Bill Chapman,
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