Twenty is a number. It means two groups of ten. We use it to count or say how many.
She has twenty books on her shelf.
There are twenty students in the class.
Twenty can be used as an adjective to describe a noun. It shows the amount or quantity is twenty.
He ordered twenty apples at the store.
She ran twenty kilometers yesterday.
In radio talk, 'twenty' means asking for location. It is short for 'What's your twenty?' to find out where someone is.
What's your twenty? Where are you now?
Call me with your twenty when you arrive.
In cricket, 'twenty' refers to a score of twenty runs by a player or team. It is part of the game's scoring system.
He scored a quick twenty in the first over.
The batsman reached twenty runs before lunch.
People sometimes say 'twenty' to mean twenty dollars or pounds. It is a short way to talk about money.
I have twenty in my wallet.
Can you lend me twenty for lunch?
Sometimes 'twenty' is used with 'past' or 'to' to talk about time. It means twenty minutes after or before the hour.
The train leaves at twenty past four.
She arrived at twenty to six sharp.
In some games or contests, a score of twenty can mean the highest or perfect score. People say it to show great achievement.
She gave a twenty for his project—perfect score!
The judge gave him a perfect twenty in the contest.
