Halfway Between 100 and 508

When you ask "What number is halfway between 100 and 508?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=100 and Y=508.

Halfway Between Line

To find the number halfway between 100 and 508, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 508 into our formula, we get:

(100 + 508)/2 = 304

Thus, the number halfway between 100 and 508 is 304.

To check that our answer is correct, we subtract 100 from 304 and subtract 304 from 508 and compare the two numbers:

304 - 100 = 204
508 - 304 = 204

As you can see, the halfway number is 204 higher than 100 and 204 lower than 508. Therefore, our halfway between answer of 304 above is correct.

Halfway Between
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Halfway Between 100 and 509
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