#### Answer

100
70

#### Work Step by Step

To round to the nearest hundred, inspect the tens digit. If 5 or greater, round up.
$\underset\uparrow73.82$
round up
$73.82\approx100$
To round to the nearest ten, inspect the ones digit. If 5 or greater, round up.
$7\underset\uparrow3.82$
do not round up
$73.82\approx70$