When you ask "What number is halfway between 81 and 852?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=81 and Y=852.
To find the number halfway between 81 and 852, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 81 and 852 into our formula, we get:
(81 + 852)/2 = 466.5
Thus, the number halfway between 81 and 852 is 466.5.
To check that our answer is correct, we subtract 81 from 466.5 and subtract 466.5 from 852 and compare the two numbers:
466.5 - 81 = 385.5
852 - 466.5 = 385.5
As you can see, the halfway number is 385.5 higher than 81 and 385.5 lower than 852. Therefore, our halfway between answer of 466.5 above is correct.
Halfway Between
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Halfway Between 81 and 853
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