When you ask "What number is halfway between 8 and 512?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=8 and Y=512.
To find the number halfway between 8 and 512, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 512 into our formula, we get:
(8 + 512)/2 = 260
Thus, the number halfway between 8 and 512 is 260.
To check that our answer is correct, we subtract 8 from 260 and subtract 260 from 512 and compare the two numbers:
260 - 8 = 252
512 - 260 = 252
As you can see, the halfway number is 252 higher than 8 and 252 lower than 512. Therefore, our halfway between answer of 260 above is correct.
Halfway Between
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Halfway Between 8 and 513
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