im bad at rounding number, what is 10.81665383 round to the nearest thousandth

I am about 90% sure on this:

10.8167

10.817

(tenths, hundredths, thousandths, etc.)

thanks very much

To round a number to the nearest thousandth, you will need to consider the digit in the fourth decimal place.

In the case of 10.81665383, the digit in the fourth decimal place is 6. When this digit is 5 or above, you round up, and when it is 4 or below, you round down.

Since the digit is 6 in this case, you need to round up the number.

To round 10.81665383 to the nearest thousandth, you round up to the next higher thousandth, which is 10.817.

So, 10.81665383 rounded to the nearest thousandth is 10.817.