Answer
$$Hundred=100$$
$$Ten=80$$
$$Unit=84$$
$$Tenth=84.0$$
$$Hundredth=84.01$$
$$Thousandth=84.007$$
Work Step by Step
Hundreds place = nearest 100 (in the whole numbers)
So, 84.00659 rounded to the hundreds place is $100$
Tens place = nearest 10 (in the whole numbers)
So, 84.00659 rounded to the tens place is $80$.
Unit = nearest 1 (in the whole numbers)
So, 84.00659 rounded to the unit is $84$.
Tenths place = to the nearest 10 (in the decimals)
So, 84.00659 rounded to the tenth place is $84.0$
Hundredths place = to the nearest 100 (in the decimals)
So, 84.00659 rounded to the hundredths place is $84.01$
Thousandths place = to the nearest 1000 (in the decimals)
So, 84.00659 rounded to the thousandths place is $84.007$