Halfway Between 100 and 520

When you ask "What number is halfway between 100 and 520?" 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=520.

Halfway Between Line

To find the number halfway between 100 and 520, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 520 into our formula, we get:

(100 + 520)/2 = 310

Thus, the number halfway between 100 and 520 is 310.

To check that our answer is correct, we subtract 100 from 310 and subtract 310 from 520 and compare the two numbers:

310 - 100 = 210
520 - 310 = 210

As you can see, the halfway number is 210 higher than 100 and 210 lower than 520. Therefore, our halfway between answer of 310 above is correct.

Halfway Between
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Halfway Between 100 and 521
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