Halfway Between 1 and 509

When you ask "What number is halfway between 1 and 509?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=1 and Y=509.

Halfway Between Line

To find the number halfway between 1 and 509, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 1 and 509 into our formula, we get:

(1 + 509)/2 = 255

Thus, the number halfway between 1 and 509 is 255.

To check that our answer is correct, we subtract 1 from 255 and subtract 255 from 509 and compare the two numbers:

255 - 1 = 254
509 - 255 = 254

As you can see, the halfway number is 254 higher than 1 and 254 lower than 509. Therefore, our halfway between answer of 255 above is correct.

Halfway Between
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Halfway Between 1 and 510
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