$40.00
$45000000
$2,645,000.00
Forty thousand dollars can be written in words as "forty thousand dollars." If you are using it in a formal context, such as a check, you might also write it as "Forty Thousand and 00/100 dollars."
two hundred and forty dollars
I write it as $4,500
$45000000
$2,645,000.00
$3,046,036.00
three hundred forty dollars
two hundred and forty dollars
I write it as $4,500
$40,000
You can write one million two hundred and forty thousand dollars as $1,240,000.00
forty million dollars
$42,000.00
$40,000.00
Forty-five dollars