When you ask "What number is halfway between 87 and 572?" 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=572.
To find the number halfway between 87 and 572, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 87 and 572 into our formula, we get:
(87 + 572)/2 = 329.5
Thus, the number halfway between 87 and 572 is 329.5.
To check that our answer is correct, we subtract 87 from 329.5 and subtract 329.5 from 572 and compare the two numbers:
329.5 - 87 = 242.5
572 - 329.5 = 242.5
As you can see, the halfway number is 242.5 higher than 87 and 242.5 lower than 572. Therefore, our halfway between answer of 329.5 above is correct.
Halfway Between
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Halfway Between 87 and 573
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