When you ask "What number is halfway between 78 and 327?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=78 and Y=327.
To find the number halfway between 78 and 327, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 78 and 327 into our formula, we get:
(78 + 327)/2 = 202.5
Thus, the number halfway between 78 and 327 is 202.5.
To check that our answer is correct, we subtract 78 from 202.5 and subtract 202.5 from 327 and compare the two numbers:
202.5 - 78 = 124.5
327 - 202.5 = 124.5
As you can see, the halfway number is 124.5 higher than 78 and 124.5 lower than 327. Therefore, our halfway between answer of 202.5 above is correct.
Halfway Between
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Halfway Between 78 and 328
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