Halfway Between 78 and 518

When you ask "What number is halfway between 78 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=78 and Y=518.

Halfway Between Line

To find the number halfway between 78 and 518, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 78 and 518 into our formula, we get:

(78 + 518)/2 = 298

Thus, the number halfway between 78 and 518 is 298.

To check that our answer is correct, we subtract 78 from 298 and subtract 298 from 518 and compare the two numbers:

298 - 78 = 220
518 - 298 = 220

As you can see, the halfway number is 220 higher than 78 and 220 lower than 518. Therefore, our halfway between answer of 298 above is correct.

Halfway Between
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Halfway Between 78 and 519
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