How to Find the Range?

When you have a series of numbers and you need to determine the range of those numbers you first must arrange them in order from smallest to greatest. Next take the greatest number and subtract the smallest, this will give you the range. For example, if Tommy bought 4 music cds with varied prices of $4, $6, $8 and $10, you would take the greatest ($10) and subtract the smallest ($4) to get the range ($6) of the cost of his cds.