```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

>
> > 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,
8 Vardre View, Deganwy, Conwy, LL31 9TE