We have been given the number 668294.018492 and we have to round it to the nearest hundred.
In order to round to nearest hundred, first of all we ignore the decimal. Hence, we have the number 668294
Now the last three digit is 294. We have to round it to nearest hundred.
We have to decide whether 294 is close to 300 or 200.
Clearly, 294 is close to 300.
Hence, the last 3 digit should be 300 .
Therefore, when we round 668294.018492 to nearest hundred we get 668300
