
When you ask "What number is halfway between 9 and 587?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=9 and Y=587.

To find the number halfway between 9 and 587, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 9 and 587 into our formula, we get:
(9 + 587)/2 = 298
Thus, the number halfway between 9 and 587 is 298.
To check that our answer is correct, we subtract 9 from 298 and subtract 298 from 587 and compare the two numbers:
298 - 9 = 289
587 - 298 = 289
As you can see, the halfway number is 289 higher than 9 and 289 lower than 587. Therefore, our halfway between answer of 298 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 9 and 588
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