When you ask "What number is halfway between 23 and 115?" 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=115.
To find the number halfway between 23 and 115, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 23 and 115 into our formula, we get:
(23 + 115)/2 = 69
Thus, the number halfway between 23 and 115 is 69.
To check that our answer is correct, we subtract 23 from 69 and subtract 69 from 115 and compare the two numbers:
69 - 23 = 46
115 - 69 = 46
As you can see, the halfway number is 46 higher than 23 and 46 lower than 115. Therefore, our halfway between answer of 69 above is correct.
Halfway Between
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Halfway Between 23 and 116
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