#### Answer

a)0.2
b) 0.162

#### Work Step by Step

To round to the nearest tenth, inspect the hundredths digit. If 5 or greater, round up.
$0.1\underset\uparrow61616$
round up
$0.161616\approx0.2$
To round to the nearest thousandth, inspect the ten-thousandths digit. If 5 or greater, round up.
$0.161\underset\uparrow616$
round up
$0.161616\approx0.162$