When you ask "What number is halfway between 1 and 256?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=1 and Y=256.
To find the number halfway between 1 and 256, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 256 into our formula, we get:
(1 + 256)/2 = 128.5
Thus, the number halfway between 1 and 256 is 128.5.
To check that our answer is correct, we subtract 1 from 128.5 and subtract 128.5 from 256 and compare the two numbers:
128.5 - 1 = 127.5
256 - 128.5 = 127.5
As you can see, the halfway number is 127.5 higher than 1 and 127.5 lower than 256. Therefore, our halfway between answer of 128.5 above is correct.
Halfway Between
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Halfway Between 1 and 257
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