
When you ask "What number is halfway between 72 and 904?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=72 and Y=904.

To find the number halfway between 72 and 904, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 72 and 904 into our formula, we get:
(72 + 904)/2 = 488
Thus, the number halfway between 72 and 904 is 488.
To check that our answer is correct, we subtract 72 from 488 and subtract 488 from 904 and compare the two numbers:
488 - 72 = 416
904 - 488 = 416
As you can see, the halfway number is 416 higher than 72 and 416 lower than 904. Therefore, our halfway between answer of 488 above is correct.
Halfway Between
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Halfway Between 72 and 905
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