How to Find the Average of Any Set of Numbers Quickly

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To quickly find the average of any set of numbers, just add them all up and then divide that total by how many numbers you have. For example, if you have test scores of 80, 90, and 70, add them to get 240, then divide by 3 to get an average of 80. This works for any set, whether it's a handful of numbers or a long list, as long as you keep track of your sum and count.