How much is 161.76 rounded to the nearest thousandth?

Answer 1

161.760

Answer 2

This number does not have a digit in the thousandth column. The last digit, the "6", is in the hundredths column. Unless we were told otherwise, we would assume that this number has been given with absolute precision.

It does not therefore really make sense to speak of rounding it to the nearest thousandth, as we are not making the number any less accurate by doing so (the number will not change at all). We can still write it with that implied level of precision if we wish as:

161.760 (to 3 decimal places).