
When you ask "What number is halfway between 4 and 249?" 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=249.

To find the number halfway between 4 and 249, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 4 and 249 into our formula, we get:
(4 + 249)/2 = 126.5
Thus, the number halfway between 4 and 249 is 126.5.
To check that our answer is correct, we subtract 4 from 126.5 and subtract 126.5 from 249 and compare the two numbers:
126.5 - 4 = 122.5
249 - 126.5 = 122.5
As you can see, the halfway number is 122.5 higher than 4 and 122.5 lower than 249. Therefore, our halfway between answer of 126.5 above is correct.
Halfway Between
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Halfway Between 4 and 250
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