Round Numbers

Sometimes, measurement in physics results non-integer numbers. therefore , it is more practise,simple  and easier the counting process if the numbers resulting from the mesurement is rounded. The rules of the rounding are as follows :

1). The number that is smaller than 5 is rounded down

       For example : 35,472 is rounded into 35,47

2). The number that is bigger than 5 is rounded up

      For example : 43,528 is rounded into 43,53

3). The number of exact 5 is rounded up if the number before it is odd numbers and it is rounded

       down if the number before it is even

       for example : 75,235 is rounded into 75,24

                                75,225 is rounded into 75,22