Rounded numbers are easier to work with in your head. They are only approximate. An exact answer can not be obtained with these numbers. Sometimes an exact answer is not required.

To round numbers to the nearest hundred thousand, make the numbers whose last five digits are 00001 through 49999 into the next lower number that ends in 00000. For example 6,424,985 rounded to the nearest hundred thousand would be 6,400,000. Numbers that have the last five digits of 50000 or more should be rounded up to the next even hundred thousand. The number 8,988,987 rounded to the nearest hundred thousand would be 9,000,000.