When you ask "What number is halfway between 23 and 102?" 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=102.
To find the number halfway between 23 and 102, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 23 and 102 into our formula, we get:
(23 + 102)/2 = 62.5
Thus, the number halfway between 23 and 102 is 62.5.
To check that our answer is correct, we subtract 23 from 62.5 and subtract 62.5 from 102 and compare the two numbers:
62.5 - 23 = 39.5
102 - 62.5 = 39.5
As you can see, the halfway number is 39.5 higher than 23 and 39.5 lower than 102. Therefore, our halfway between answer of 62.5 above is correct.
Halfway Between
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Halfway Between 23 and 103
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