Write the fraction $\frac{9}{1000}$91000 as a decimal.
Write the following fraction as a decimal:
$\frac{2}{1000}$21000
Write the fraction $\frac{81}{1000}$811000 as a decimal.
Write the fraction $\frac{40}{1000}$401000 as a decimal.
Know the relative size and place value structure of positive and negative integers and decimals to three places.