Halfway Between 78 and 331

When you ask "What number is halfway between 78 and 331?" 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=331.

Halfway Between Line

To find the number halfway between 78 and 331, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 78 and 331 into our formula, we get:

(78 + 331)/2 = 204.5

Thus, the number halfway between 78 and 331 is 204.5.

To check that our answer is correct, we subtract 78 from 204.5 and subtract 204.5 from 331 and compare the two numbers:

204.5 - 78 = 126.5
331 - 204.5 = 126.5

As you can see, the halfway number is 126.5 higher than 78 and 126.5 lower than 331. Therefore, our halfway between answer of 204.5 above is correct.

Halfway Between
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Halfway Between 78 and 332
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