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
