40,000.00
60000.450
4.005 x 10 to the 4th
$40,000.00
It is 40000.000000018
To write eight hundred thousand and forty-two millionths in standard form, you would use the decimal form. It would be written as 0.800042.
Forty five thousand
I would write, one thousand, three hundred and forty as: 1,340
You would write forty-three thousandths as: .043.
20,007.00045
Eight thousand, forty-seven ten-thousandths.
Six thousand forty-seven ten-thousandths.
45000.621