
When you ask "What number is halfway between 4 and 276?" 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=276.

To find the number halfway between 4 and 276, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 4 and 276 into our formula, we get:
(4 + 276)/2 = 140
Thus, the number halfway between 4 and 276 is 140.
To check that our answer is correct, we subtract 4 from 140 and subtract 140 from 276 and compare the two numbers:
140 - 4 = 136
276 - 140 = 136
As you can see, the halfway number is 136 higher than 4 and 136 lower than 276. Therefore, our halfway between answer of 140 above is correct.
Halfway Between
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Halfway Between 4 and 277
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