Asked by May Flower

How do you find the missing number when you have four numbers but missing the fifth. Find the average of 12.3 with the numbers of 12.8,12.6,11.8,9.7
Answered by Steve
5 * 12.3 = 61.5

That is the total of the 5 numbers with that average.

So, the missing number is 61.5 minus the sum of the first 4 numbers.
Answered by Ms. Sue
5 * 12.3 = 61.5

12.8 + 12.6 + 11.8 + 9.7 = 46.9

61.5 - 46.9 = 14.6


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