When you ask "What number is halfway between 28 and 319?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=28 and Y=319.
To find the number halfway between 28 and 319, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 28 and 319 into our formula, we get:
(28 + 319)/2 = 173.5
Thus, the number halfway between 28 and 319 is 173.5.
To check that our answer is correct, we subtract 28 from 173.5 and subtract 173.5 from 319 and compare the two numbers:
173.5 - 28 = 145.5
319 - 173.5 = 145.5
As you can see, the halfway number is 145.5 higher than 28 and 145.5 lower than 319. Therefore, our halfway between answer of 173.5 above is correct.
Halfway Between
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Halfway Between 28 and 320
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