You could probably take the $20 dollar (note - two "L"s) bills to a bank and turn them in for more modern bills. They're not worth more than face value if they're in worn condition.
However, the older notes should be evaluated by a dealer because they are almost certainly worth more than face value. You'd be losing money, possibly a lot, if you spent them - see: http://www.uscurrencyauctions.com/$20notes.htm
The Dollar is becoming less valuable because of Fort Knox having less gold in the bank than the amount of dollars that the government is printing.
i think so.
no
It is just a Star note. It replaces a note that my have been not up to the printing standard or just a miss print.
Have the Fed's stop printing money!
1945
It didn't really have the letter 'f'. That was just the way, in old printing, that the letter 's' looked. Ok, here is what I know about the 8 dollar bill.... you can read the sory about the 8 dollar bill at http://www.8dollarbill.com
$50.00
Yes, but the government stopped printing them in the 1940s.
Check the Related Link at the Bureau of Engraving and Printing, below
No, a silver dollar does not equal a half dollar. Instead, in the USA it equals a full dollar.
The nearest dollar is 9. You would round up instead of down, because 55 is over 50%. At or above 50%, you round up in math.