Identify the digit in the place value you want to round to
Look at the digit immediately to the right of it
If that digit is 5 or greater, increase the target digit by 1
If that digit is less than 5, keep the target digit the same
Replace all digits to the right of the target digit with zeros for whole numbers
Replace all digits to the right of the target digit with nothing for decimals
Check the result to ensure it matches the required place value