
When you ask "What number is halfway between 8 and 709?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=8 and Y=709.

To find the number halfway between 8 and 709, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 709 into our formula, we get:
(8 + 709)/2 = 358.5
Thus, the number halfway between 8 and 709 is 358.5.
To check that our answer is correct, we subtract 8 from 358.5 and subtract 358.5 from 709 and compare the two numbers:
358.5 - 8 = 350.5
709 - 358.5 = 350.5
As you can see, the halfway number is 350.5 higher than 8 and 350.5 lower than 709. Therefore, our halfway between answer of 358.5 above is correct.
Halfway Between
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Halfway Between 8 and 710
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