
When you ask "What number is halfway between 85 and 276?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=85 and Y=276.

To find the number halfway between 85 and 276, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 85 and 276 into our formula, we get:
(85 + 276)/2 = 180.5
Thus, the number halfway between 85 and 276 is 180.5.
To check that our answer is correct, we subtract 85 from 180.5 and subtract 180.5 from 276 and compare the two numbers:
180.5 - 85 = 95.5
276 - 180.5 = 95.5
As you can see, the halfway number is 95.5 higher than 85 and 95.5 lower than 276. Therefore, our halfway between answer of 180.5 above is correct.
Halfway Between
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Halfway Between 85 and 277
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