Quote Originally Posted by Ramil
Quote Originally Posted by scotcher
Here is three dollars - "three dollars" is a mass/ uncountable noun phrase. You are talking about an amount of money.

Here are three dollar bills - "dollar bills" is a countable noun phrase. You are talking about a quantity of bills.
Would it be an error to say "Here are five (six, seven, eight) dollars" or do I have to use "is"?
It would be a really tiny error that no-one would notice or care about even if they did, but it would probably contribute to the overall impression of foreignness, along with all the other really tiny errors people make when speaking a foreign langauge.