Halfway Between 13 and 642

When you ask "What number is halfway between 13 and 642?" 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=642.

Halfway Between Line

To find the number halfway between 13 and 642, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 13 and 642 into our formula, we get:

(13 + 642)/2 = 327.5

Thus, the number halfway between 13 and 642 is 327.5.

To check that our answer is correct, we subtract 13 from 327.5 and subtract 327.5 from 642 and compare the two numbers:

327.5 - 13 = 314.5
642 - 327.5 = 314.5

As you can see, the halfway number is 314.5 higher than 13 and 314.5 lower than 642. Therefore, our halfway between answer of 327.5 above is correct.

Halfway Between
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Halfway Between 13 and 643
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