How to round to the nearest hundreth

Look at the thousandths place digit.

If the number is less than or equal to 4 ...

Keep the digit in the hundredths place and delete the thousandths place digit.

Ex : 12.493 - -> 12.49

If the number if greater than or equal to 5 ...

Round the number up to the next nearest natural number in the hundredths place.

Ex : 12.588 - -> 12.59