The answer depends on the degree of rounding required.
512162 is already rounded the nearest tenths.
512160
512160
512162 rounds down to 512160
Look at the digit in ones place. If it is five or greater, round the digit in tens place to the next higher digit. If the digit in ones place is less than five, leave the digit in tens place as it is. 512162 rounded to the nearest tens is 512160.
512160
512160
512160
Rounded to the nearest ten it is 512160
=ROUND(Number, Number of Digits) Number is the number you are trying to round. Number of Digits is the amount of digits you want to round it to. So for example: =ROUND(41.98662,3) That will give you 41.987 as the answer.
If one were to round the number 12.45 to another number, there are a couple of options. First, one can round the number to 12.5 or one can round the number to 13.
Question: How to round a number? Answer: if the number is 4 or below you round down if it's 5 or above you round up.