Calculating Means (Year 8 Maths)

The following test is covering 'Calculating Means' for Year 8 Maths.

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Question 1

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The mean of three numbers is 12. If one of the numbers is 20, what is the total of the other two numbers?

What is the mean of the numbers 100, 200, 300, 400, 500?

If the mean of four numbers is 5, what is their total?

Calculate the mean of the numbers 18, 36, 54, and 72.

If the mean of 3, 6, and 9 is x, what is the value of x?

If the mean of four numbers is 6, what is their total?

If the mean of 2, 4, 6, and 8 is y, what is the value of y?