Halfway Between 15 and 521

When you ask "What number is halfway between 15 and 521?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=15 and Y=521.

Halfway Between Line

To find the number halfway between 15 and 521, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 15 and 521 into our formula, we get:

(15 + 521)/2 = 268

Thus, the number halfway between 15 and 521 is 268.

To check that our answer is correct, we subtract 15 from 268 and subtract 268 from 521 and compare the two numbers:

268 - 15 = 253
521 - 268 = 253

As you can see, the halfway number is 253 higher than 15 and 253 lower than 521. Therefore, our halfway between answer of 268 above is correct.

Halfway Between
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Halfway Between 15 and 522
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