Halfway Between 25 and 815

When you ask "What number is halfway between 25 and 815?" 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=815.

Halfway Between Line

To find the number halfway between 25 and 815, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 25 and 815 into our formula, we get:

(25 + 815)/2 = 420

Thus, the number halfway between 25 and 815 is 420.

To check that our answer is correct, we subtract 25 from 420 and subtract 420 from 815 and compare the two numbers:

420 - 25 = 395
815 - 420 = 395

As you can see, the halfway number is 395 higher than 25 and 395 lower than 815. Therefore, our halfway between answer of 420 above is correct.

Halfway Between
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Halfway Between 25 and 816
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