
When you ask "What number is halfway between 23 and 542?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=23 and Y=542.

To find the number halfway between 23 and 542, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 23 and 542 into our formula, we get:
(23 + 542)/2 = 282.5
Thus, the number halfway between 23 and 542 is 282.5.
To check that our answer is correct, we subtract 23 from 282.5 and subtract 282.5 from 542 and compare the two numbers:
282.5 - 23 = 259.5
542 - 282.5 = 259.5
As you can see, the halfway number is 259.5 higher than 23 and 259.5 lower than 542. Therefore, our halfway between answer of 282.5 above is correct.
Halfway Between
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Halfway Between 23 and 543
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