Answer
a) 1.0
b) 0.984
Work Step by Step
To round to the nearest tenth, inspect the hundredths digit. If 5 or greater, round up.
$0.9\underset\uparrow836$
round up
$0.9836\approx1.0$
To round to the nearest thousandth, inspect the ten-thousandths digit. If 5 or greater, round up.
$0.983\underset\uparrow6$
round up
$0.9836\approx0.984$
