When you ask "What number is halfway between 81 and 764?" 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=764.
To find the number halfway between 81 and 764, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 81 and 764 into our formula, we get:
(81 + 764)/2 = 422.5
Thus, the number halfway between 81 and 764 is 422.5.
To check that our answer is correct, we subtract 81 from 422.5 and subtract 422.5 from 764 and compare the two numbers:
422.5 - 81 = 341.5
764 - 422.5 = 341.5
As you can see, the halfway number is 341.5 higher than 81 and 341.5 lower than 764. Therefore, our halfway between answer of 422.5 above is correct.
Halfway Between
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Halfway Between 81 and 765
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