Halfway Between 85 and 680

When you ask "What number is halfway between 85 and 680?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=85 and Y=680.

Halfway Between Line

To find the number halfway between 85 and 680, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 85 and 680 into our formula, we get:

(85 + 680)/2 = 382.5

Thus, the number halfway between 85 and 680 is 382.5.

To check that our answer is correct, we subtract 85 from 382.5 and subtract 382.5 from 680 and compare the two numbers:

382.5 - 85 = 297.5
680 - 382.5 = 297.5

As you can see, the halfway number is 297.5 higher than 85 and 297.5 lower than 680. Therefore, our halfway between answer of 382.5 above is correct.

Halfway Between
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