When you ask "What number is halfway between 81 and 304?" 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=304.
To find the number halfway between 81 and 304, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 81 and 304 into our formula, we get:
(81 + 304)/2 = 192.5
Thus, the number halfway between 81 and 304 is 192.5.
To check that our answer is correct, we subtract 81 from 192.5 and subtract 192.5 from 304 and compare the two numbers:
192.5 - 81 = 111.5
304 - 192.5 = 111.5
As you can see, the halfway number is 111.5 higher than 81 and 111.5 lower than 304. Therefore, our halfway between answer of 192.5 above is correct.
Halfway Between
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Halfway Between 81 and 305
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