
When you ask "What number is halfway between 4 and 303?" 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=303.

To find the number halfway between 4 and 303, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 4 and 303 into our formula, we get:
(4 + 303)/2 = 153.5
Thus, the number halfway between 4 and 303 is 153.5.
To check that our answer is correct, we subtract 4 from 153.5 and subtract 153.5 from 303 and compare the two numbers:
153.5 - 4 = 149.5
303 - 153.5 = 149.5
As you can see, the halfway number is 149.5 higher than 4 and 149.5 lower than 303. Therefore, our halfway between answer of 153.5 above is correct.
Halfway Between
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Halfway Between 4 and 304
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