Form 11: Finding Missing Values Given the Mean
Find missing values in a data set when given the overall mean. Use arithmetic reasoning to solve for unknown data points.
Questions
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MultiChoice
The mean of three numbers is 8. Two of the numbers are 6 and 8. What is the third number?
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MultiChoice
The mean of 5, 10, and x is 10. What is the value of x?
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MultiChoice
The mean of four numbers is 10. Three of the numbers are 6, 8, and 10. Find the fourth number.
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MultiChoice
Sam's test scores are 80 and 85. What score does he need on the 3rd test to get a mean of 85?
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MultiChoice
The mean of 3, 5, and x is 5. Find x.
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MultiChoice
The mean of 10, 15, and x is 15. What is x?
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MultiChoice
The mean of 4 numbers is 6. Three of the numbers are 2, 4, and 6. Find the missing number.
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MultiChoice
The mean of 10, 20, and x is 20. Find x.
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MultiChoice
To have a mean score of 90 on 3 quizzes, if your first two scores are 85 and 85, what must the 3rd score be?
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MultiChoice
The mean of 6, 10, and x is 10. Find x.
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MultiChoice
The mean of 12, 15, and x is 15. What is x?
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MultiChoice
The mean of four numbers is 5. Three numbers are 3, 4, and 5. Find the fourth number.