Halfway Between 45 and 688

When you ask "What number is halfway between 45 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=45 and Y=688.

Halfway Between Line

To find the number halfway between 45 and 688, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 45 and 688 into our formula, we get:

(45 + 688)/2 = 366.5

Thus, the number halfway between 45 and 688 is 366.5.

To check that our answer is correct, we subtract 45 from 366.5 and subtract 366.5 from 688 and compare the two numbers:

366.5 - 45 = 321.5
688 - 366.5 = 321.5

As you can see, the halfway number is 321.5 higher than 45 and 321.5 lower than 688. Therefore, our halfway between answer of 366.5 above is correct.

Halfway Between
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