When you ask "What number is halfway between 8 and 23?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=8 and Y=23.
To find the number halfway between 8 and 23, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 23 into our formula, we get:
(8 + 23)/2 = 15.5
Thus, the number halfway between 8 and 23 is 15.5.
To check that our answer is correct, we subtract 8 from 15.5 and subtract 15.5 from 23 and compare the two numbers:
15.5 - 8 = 7.5
23 - 15.5 = 7.5
As you can see, the halfway number is 7.5 higher than 8 and 7.5 lower than 23. Therefore, our halfway between answer of 15.5 above is correct.
Halfway Between
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Halfway Between 8 and 24
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