When you ask "What number is halfway between 23 and 130?" 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=130.
To find the number halfway between 23 and 130, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 23 and 130 into our formula, we get:
(23 + 130)/2 = 76.5
Thus, the number halfway between 23 and 130 is 76.5.
To check that our answer is correct, we subtract 23 from 76.5 and subtract 76.5 from 130 and compare the two numbers:
76.5 - 23 = 53.5
130 - 76.5 = 53.5
As you can see, the halfway number is 53.5 higher than 23 and 53.5 lower than 130. Therefore, our halfway between answer of 76.5 above is correct.
Halfway Between
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Halfway Between 23 and 131
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