IXL | Mean: find the missing number

Julian has the following data:

If the mean is 6, which number could q be?

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Kiara has the following data:

If the mean is 17, which number could p be?

The mean is the average of the numbers. You find the mean by adding the numbers together and then dividing by the number of numbers in the group.

There are 4 numbers in the group.

Try p = 10.

Find the sum of the numbers.

16 + 16 + 10 + 18 = 60

Divide by 4.

60 ÷ 4 = 15

When p = 10, the mean is 15.

Try p = 18.

Find the sum of the numbers.

16 + 16 + 18 + 18 = 68

Divide by 4.

68 ÷ 4 = 17

When p = 18, the mean is 17.

The mean is 17, so p = 18.

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