When you ask "What number is halfway between 55 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=55 and Y=116.
To find the number halfway between 55 and 116, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 55 and 116 into our formula, we get:
(55 + 116)/2 = 85.5
Thus, the number halfway between 55 and 116 is 85.5.
To check that our answer is correct, we subtract 55 from 85.5 and subtract 85.5 from 116 and compare the two numbers:
85.5 - 55 = 30.5
116 - 85.5 = 30.5
As you can see, the halfway number is 30.5 higher than 55 and 30.5 lower than 116. Therefore, our halfway between answer of 85.5 above is correct.
Halfway Between
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Halfway Between 55 and 117
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