Rounding Whole Numbers

Rounding is basically finding a less accurate but nearest number for calculations purpose. Generally we do not get exact answer by rounding off but it helps in heading easily for the calculation part.

There are some rules to round whole Numbers:

1. For any number which is to be rounded we have to check first the digits on the right hand side. If the right side digits ranges between 0 to 4 it does not bring any effect on the result, these digits automatically becomes 0. i.e, 82 is rounded as 80.                                                                                                                            
2. Now check the right side digits if the ranges between 5 to 9, then it is going make any difference in the result, the rounding digit will end up by one number up and the digits on the right hand side will become 0. i.e, 88 is rounded as 90.

1. Choose the place value(tens, hundreds, thousands etc) to be rounded.
2. Observe the number next to the digit to be rounded.
3. If the number next to that digit is less than 5 then replace all the numbers next to that digit by 0.
4. If the number next to that digit is greater than or equal to 5 then increment the digit by 1 and replace all the numbers next to that digit by 0.