Add the numbers together, and then divide by the original amount of numbers in the set.
To work out the mean (the average) in maths, you have to add up all of the numbers you are averaging, then divide what you now have by the amount of numbers you started with.
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The average of a set of numbers is the sum of the numbers in the set divided by the number of elements in the set.
it's like the average. you find it by adding up all the numbers and then dividing it by how many numbers there are.
The word "mean" in math means the same thing as average. Mean is just a nickname for average.
The mean of numbers is the average. To find this, first add all the numbers, then divide by how many numbers you added.
Add the two middle numbers and divide that total by two (the average).