Halfway Between 15 and 513

When you ask "What number is halfway between 15 and 513?" 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=513.

Halfway Between Line

To find the number halfway between 15 and 513, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 15 and 513 into our formula, we get:

(15 + 513)/2 = 264

Thus, the number halfway between 15 and 513 is 264.

To check that our answer is correct, we subtract 15 from 264 and subtract 264 from 513 and compare the two numbers:

264 - 15 = 249
513 - 264 = 249

As you can see, the halfway number is 249 higher than 15 and 249 lower than 513. Therefore, our halfway between answer of 264 above is correct.

Halfway Between
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