The number 30 is "thirty" and 31 is "thirty-one."
The number 30,000 is thirty thousand.
The number 30,000 is "thirty thousand."
The number 30 is XXX in Roman numerals, as each X equals 10.
That is the correct spelling of the word "third".
Thirty = 30
30 = thirty.
You spell it like this: twenty, thirty
30 = thirty
30= thirty
treinta
Thirty.