When you ask "What number is halfway between 83 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=83 and Y=512.
To find the number halfway between 83 and 512, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 83 and 512 into our formula, we get:
(83 + 512)/2 = 297.5
Thus, the number halfway between 83 and 512 is 297.5.
To check that our answer is correct, we subtract 83 from 297.5 and subtract 297.5 from 512 and compare the two numbers:
297.5 - 83 = 214.5
512 - 297.5 = 214.5
As you can see, the halfway number is 214.5 higher than 83 and 214.5 lower than 512. Therefore, our halfway between answer of 297.5 above is correct.
Halfway Between
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Halfway Between 83 and 513
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