Halfway Between 13 and 638

When you ask "What number is halfway between 13 and 638?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=13 and Y=638.

Halfway Between Line

To find the number halfway between 13 and 638, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 13 and 638 into our formula, we get:

(13 + 638)/2 = 325.5

Thus, the number halfway between 13 and 638 is 325.5.

To check that our answer is correct, we subtract 13 from 325.5 and subtract 325.5 from 638 and compare the two numbers:

325.5 - 13 = 312.5
638 - 325.5 = 312.5

As you can see, the halfway number is 312.5 higher than 13 and 312.5 lower than 638. Therefore, our halfway between answer of 325.5 above is correct.

Halfway Between
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Halfway Between 13 and 639
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