That is the correct spelling of "forty" (40).
forty three
Forty = vierzig
You had it right. It is forty.
You spell it like this: Forty Five dollars.....
forty
Forty one is einundvierzig.
Forty.
You spell 44 as forty four.
"Forty thousand" in numbers is "40,000"
47 is spelled out, 'forty-seven'.
That is the correct spelling of forty-three (43).
six hundred and forty...or 640