#### Answer

a) 0.1
b) 0.057

#### Work Step by Step

To round to the nearest tenth, inspect the hundredths digit. If 5 or greater, round up.
$0.0\underset\uparrow5731$
round up
$0.05731\approx0.1$
To round to the nearest thousandth, inspect the ten-thousandths digit. If 5 or greater, round up.
$0.057\underset\uparrow31$
do not round up
$0.05731\approx0.057$