When you ask "What number is halfway between 8 and 317?" 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=317.
To find the number halfway between 8 and 317, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 317 into our formula, we get:
(8 + 317)/2 = 162.5
Thus, the number halfway between 8 and 317 is 162.5.
To check that our answer is correct, we subtract 8 from 162.5 and subtract 162.5 from 317 and compare the two numbers:
162.5 - 8 = 154.5
317 - 162.5 = 154.5
As you can see, the halfway number is 154.5 higher than 8 and 154.5 lower than 317. Therefore, our halfway between answer of 162.5 above is correct.
Halfway Between
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Halfway Between 8 and 318
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