Halfway Between 1 and 511

When you ask "What number is halfway between 1 and 511?" 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=511.

Halfway Between Line

To find the number halfway between 1 and 511, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 1 and 511 into our formula, we get:

(1 + 511)/2 = 256

Thus, the number halfway between 1 and 511 is 256.

To check that our answer is correct, we subtract 1 from 256 and subtract 256 from 511 and compare the two numbers:

256 - 1 = 255
511 - 256 = 255

As you can see, the halfway number is 255 higher than 1 and 255 lower than 511. Therefore, our halfway between answer of 256 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 1 and 512
Here is our next Halfway Between calculation.