Halfway Between 15 and 635

When you ask "What number is halfway between 15 and 635?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=15 and Y=635.

Halfway Between Line

To find the number halfway between 15 and 635, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 15 and 635 into our formula, we get:

(15 + 635)/2 = 325

Thus, the number halfway between 15 and 635 is 325.

To check that our answer is correct, we subtract 15 from 325 and subtract 325 from 635 and compare the two numbers:

325 - 15 = 310
635 - 325 = 310

As you can see, the halfway number is 310 higher than 15 and 310 lower than 635. Therefore, our halfway between answer of 325 above is correct.

Halfway Between
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Halfway Between 15 and 636
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