Halfway Between 85 and 688

When you ask "What number is halfway between 85 and 688?" 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=688.

Halfway Between Line

To find the number halfway between 85 and 688, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 85 and 688 into our formula, we get:

(85 + 688)/2 = 386.5

Thus, the number halfway between 85 and 688 is 386.5.

To check that our answer is correct, we subtract 85 from 386.5 and subtract 386.5 from 688 and compare the two numbers:

386.5 - 85 = 301.5
688 - 386.5 = 301.5

As you can see, the halfway number is 301.5 higher than 85 and 301.5 lower than 688. Therefore, our halfway between answer of 386.5 above is correct.

Halfway Between
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