I think it would be preferable in most cases to write 1880's. I would not spell it out.
No, you do not put a hyphen between the words "eighteen" and "eighties."
No, "sign off" is typically written as two separate words with no hyphen. It is used in informal and formal communication to indicate the end of a message or communication.
Some words that end with "teen" include thirteen, fourteen, fifteen, sixteen, seventeen, and eighteen.
The word "in between" implies that there are two words on either side of it.
Intervening words refer to words that come between two other words or phrases in a sentence, breaking the connection between them. These words can sometimes disrupt the flow or clarity of a sentence and may need to be removed or repositioned for better understanding.
"In between" is commonly considered as two words when used as a phrase.
yes
eighteen fortieths
Eighteen.
Eighteen hundredths.
eighteen and one one-hundredth Eighteen point zero one.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 4 words with the pattern EI-H----. That is, eight letter words with 1st letter E and 2nd letter I and 4th letter H. In alphabetical order, they are: eighteen eighthly eighties eightvos
Eighteen and nine tenths.
Two and eighteen hundredths.
The answer is eighteen ten-thousandths
It is eighteen hundredths.
eighteen thousandths
Eighteen thousand.