Arithmetic Grade Five

Lesson Seventy-nine: Computing Averages with Decimals

Here is another example: 

    FIND THE AVERAGE OF: .6 + .7 + 1.1 + .7 + .5 

    STEP ONE: .6 + .7 + 1.1 + .7 + .5 = 3.6

    STEP TWO: 3.6 / 5 = .72
Here's another example: 

     Compute the average: .21, 2.4, 2.2, .23, .22, 2.0, 2.6, .25
       (remember to line up the decimals before you add!)

     STEP ONE: .21 + 2.4 + 2.2 + .23 + .22 + 2.0 + 2.6 + .25 = 10.11

     STEP TWO: 10.11 / 8 = 1.26375

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