When you buy a large parcel of land, you are typically charged a certain amount of money per acre. If you've been looking for a piece of property and have come across a few different "cost per acre" charges, you can find the average cost using a specific mathematical technique. This involves adding up all the numbers you have and dividing by the total number of values present.

Add together the total "cost per acre" dollar amounts you have located. For example, if you looked at three different pieces of property with one costing $500 per acre, another costing $600 per acre and another costing $1,000 per acre, $500 + $600 + $1,000 would equal $2,100.

Count the total number of "cost per acre" dollar amounts you found. If you looked at three different pieces of property with three different "cost per acre" dollar amounts, the associated number would be 3.

Divide the number you got when you added together the different dollar amounts by the total number of "cost per acre" dollar amounts. For example, $2,100 divided by 3 equals $700. The average cost per acre would be $700.
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