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 five numbers is 11. If one of the numbers is 9, what is the total of the other four numbers?

Calculate the mean of the numbers 15, 25, 35, and 45.

Calculate the mean of the numbers 60, 80, 100, 120, and 140.

If the mean of the numbers 10, 20, 30, 40, and 50 is n, what is the value of n?

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

If the mean of seven numbers is 9, what is their total?

What is the mean of the series 5, 10, 15, 20, 25?