Halfway Between 40 and 518

When you ask "What number is halfway between 40 and 518?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=40 and Y=518.

Halfway Between Line

To find the number halfway between 40 and 518, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 40 and 518 into our formula, we get:

(40 + 518)/2 = 279

Thus, the number halfway between 40 and 518 is 279.

To check that our answer is correct, we subtract 40 from 279 and subtract 279 from 518 and compare the two numbers:

279 - 40 = 239
518 - 279 = 239

As you can see, the halfway number is 239 higher than 40 and 239 lower than 518. Therefore, our halfway between answer of 279 above is correct.

Halfway Between
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Halfway Between 40 and 519
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