Halfway Between 55 and 688

When you ask "What number is halfway between 55 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=55 and Y=688.

Halfway Between Line

To find the number halfway between 55 and 688, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 55 and 688 into our formula, we get:

(55 + 688)/2 = 371.5

Thus, the number halfway between 55 and 688 is 371.5.

To check that our answer is correct, we subtract 55 from 371.5 and subtract 371.5 from 688 and compare the two numbers:

371.5 - 55 = 316.5
688 - 371.5 = 316.5

As you can see, the halfway number is 316.5 higher than 55 and 316.5 lower than 688. Therefore, our halfway between answer of 371.5 above is correct.

Halfway Between
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