Answer:
Tens place: 550. Tenths place: 546.4
Explanation:
(not sure if you meant the tens place or the tenths place)
To start, 546.72-0.324 is equal to 546.39600. To round to the tens place, look at the number next to the tens place (which is the ones place or just the 6 in 546.) If the number in the ones place is equal to or greater than 5, round one place up and make every number after the tens place into a zero. In this case, you'd get 550.
To round to the tenths place, we need to look at the numbers after the decimal point. The 3 is the tenths place and the 9 is the hundredths place. Since 9 is greater than 5, you need to round the 3 up to 4, which makes every other number after the new 4 into a zero. Your new number would be 546.4.
Hope this helps!