It's usually very difficult to forecast coin and banknote prices two or three years in the future let alone a decade, but 1985 $100 bills are neither rare nor valuable. Even today (2015) a circulated one has no extra worth; in another 10 years they probably won't gain more than $5 at retail.
100usd
No.
Dollar bills are not always worth one dollar, however one dollar bills are worth one dollar for the sake that 1=1, it is a one dollar bill, and can be exchanged for goods and services.
What is the worth of a red seal 2 dollar bill
It's a dollar, spend it.
$5.75
About $5 today.
100usd
It is a common $100 bill in circulation and has a value of $100.
No.
It's still worth $10.
1985Federal Reserve NoteGreen$5$5.50 A 1985 Federal Reserve Note that is Green and is a 5 dollar bill is worth about $5.50. You can go to US currency auctions . com and it will give you a list of how much different currency is worth.
The value of a 1985 one hundred dollar bill would depend on its condition and any rare features it may have. Generally, a circulated 1985 one hundred dollar bill would be worth its face value. If it is uncirculated or has any unique characteristics, it could be worth more to collectors.
as of February 18, 2012, a 1000 peso Mexican bill from 1985 is worth about 75 cents.
At least $20 US dollars (I mean, c'mon, it's not that hard)
a half hundred dollar bill is worth $50
At the time, it was worth one dollar.