When you ask "What number is halfway between 87 and 502?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=87 and Y=502.
To find the number halfway between 87 and 502, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 87 and 502 into our formula, we get:
(87 + 502)/2 = 294.5
Thus, the number halfway between 87 and 502 is 294.5.
To check that our answer is correct, we subtract 87 from 294.5 and subtract 294.5 from 502 and compare the two numbers:
294.5 - 87 = 207.5
502 - 294.5 = 207.5
As you can see, the halfway number is 207.5 higher than 87 and 207.5 lower than 502. Therefore, our halfway between answer of 294.5 above is correct.
Halfway Between
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Halfway Between 87 and 503
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