For all those who have problems with millard/billion thing (a bit simpler than wiki):
Google says for "the euro" "der Euro" (guessing male gender), but "the euros" "die EUR" what's this?
What gender is Euro? Its plural is the same word?
This can be confusing, thanks for asking! Der Euro (masculine) = The euro, 100 Euro = 100 euros or 100 euro (either is fine). Remember that the article "die" is for feminine singular as well as all plural nouns. EUR is just a shortened form like USD for dollar.
Is Germany one of the countries that writes prices with the € before or after the price? (3.90€) Do they use a comma as their decimal point, too?
They use a comma as their decimal point, and a full stop/period, or a space, as our 1,000s-separator comma. As for where it is placed, it seems to change depending on personal preference: officially, it goes before, but the Germans, following the convention of the Deutschmark, often place it after. The French, of course, often put it instead of a decimal comma…
A question just occurred to me: Why is Milliarden capitalized when zwei is not? Both numbers appear to be adjectives modifying Euro. Though I suppose you could think of this as "He has two millions of Euros", in which case Milliarden is a noun. Is it always capitalized?
The rules for this are somewhat peculiar:
- ordinal numbers lower than a million are not capitalized
- if "Hundert" and "Tausend" refer to an undefined quantity (as in "several hundred") you can capitalize them if you want (but don't have to)
- numbers greater than or equal to a million are capitalized
- several other rules
- see here: http://is.gd/SD6isJ
- don't ask me why
And yes, "Milliarden" is a noun here.