When you ask "What number is halfway between 89 and 116?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=89 and Y=116.
To find the number halfway between 89 and 116, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 89 and 116 into our formula, we get:
(89 + 116)/2 = 102.5
Thus, the number halfway between 89 and 116 is 102.5.
To check that our answer is correct, we subtract 89 from 102.5 and subtract 102.5 from 116 and compare the two numbers:
102.5 - 89 = 13.5
116 - 102.5 = 13.5
As you can see, the halfway number is 13.5 higher than 89 and 13.5 lower than 116. Therefore, our halfway between answer of 102.5 above is correct.
Halfway Between
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Halfway Between 89 and 117
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