
When you ask "What number is halfway between 75 and 816?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=75 and Y=816.

To find the number halfway between 75 and 816, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 75 and 816 into our formula, we get:
(75 + 816)/2 = 445.5
Thus, the number halfway between 75 and 816 is 445.5.
To check that our answer is correct, we subtract 75 from 445.5 and subtract 445.5 from 816 and compare the two numbers:
445.5 - 75 = 370.5
816 - 445.5 = 370.5
As you can see, the halfway number is 370.5 higher than 75 and 370.5 lower than 816. Therefore, our halfway between answer of 445.5 above is correct.
Halfway Between
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Halfway Between 75 and 817
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