When you ask "What number is halfway between 25 and 781?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=25 and Y=781.
To find the number halfway between 25 and 781, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 25 and 781 into our formula, we get:
(25 + 781)/2 = 403
Thus, the number halfway between 25 and 781 is 403.
To check that our answer is correct, we subtract 25 from 403 and subtract 403 from 781 and compare the two numbers:
403 - 25 = 378
781 - 403 = 378
As you can see, the halfway number is 378 higher than 25 and 378 lower than 781. Therefore, our halfway between answer of 403 above is correct.
Halfway Between
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Halfway Between 25 and 782
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