Halfway Between 13 and 688

When you ask "What number is halfway between 13 and 688?" 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=688.

Halfway Between Line

To find the number halfway between 13 and 688, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 13 and 688 into our formula, we get:

(13 + 688)/2 = 350.5

Thus, the number halfway between 13 and 688 is 350.5.

To check that our answer is correct, we subtract 13 from 350.5 and subtract 350.5 from 688 and compare the two numbers:

350.5 - 13 = 337.5
688 - 350.5 = 337.5

As you can see, the halfway number is 337.5 higher than 13 and 337.5 lower than 688. Therefore, our halfway between answer of 350.5 above is correct.

Halfway Between
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