When you ask "What number is halfway between 4 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=4 and Y=317.
To find the number halfway between 4 and 317, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 4 and 317 into our formula, we get:
(4 + 317)/2 = 160.5
Thus, the number halfway between 4 and 317 is 160.5.
To check that our answer is correct, we subtract 4 from 160.5 and subtract 160.5 from 317 and compare the two numbers:
160.5 - 4 = 156.5
317 - 160.5 = 156.5
As you can see, the halfway number is 156.5 higher than 4 and 156.5 lower than 317. Therefore, our halfway between answer of 160.5 above is correct.
Halfway Between
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Halfway Between 4 and 318
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