When you ask "What number is halfway between 8 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=8 and Y=115.
To find the number halfway between 8 and 115, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 115 into our formula, we get:
(8 + 115)/2 = 61.5
Thus, the number halfway between 8 and 115 is 61.5.
To check that our answer is correct, we subtract 8 from 61.5 and subtract 61.5 from 115 and compare the two numbers:
61.5 - 8 = 53.5
115 - 61.5 = 53.5
As you can see, the halfway number is 53.5 higher than 8 and 53.5 lower than 115. Therefore, our halfway between answer of 61.5 above is correct.
Halfway Between
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Halfway Between 8 and 116
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