Halfway Between 66 and 688

When you ask "What number is halfway between 66 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=66 and Y=688.

Halfway Between Line

To find the number halfway between 66 and 688, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 66 and 688 into our formula, we get:

(66 + 688)/2 = 377

Thus, the number halfway between 66 and 688 is 377.

To check that our answer is correct, we subtract 66 from 377 and subtract 377 from 688 and compare the two numbers:

377 - 66 = 311
688 - 377 = 311

As you can see, the halfway number is 311 higher than 66 and 311 lower than 688. Therefore, our halfway between answer of 377 above is correct.

Halfway Between
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