When you ask "What number is halfway between 55 and 112?" 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=112.
To find the number halfway between 55 and 112, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 55 and 112 into our formula, we get:
(55 + 112)/2 = 83.5
Thus, the number halfway between 55 and 112 is 83.5.
To check that our answer is correct, we subtract 55 from 83.5 and subtract 83.5 from 112 and compare the two numbers:
83.5 - 55 = 28.5
112 - 83.5 = 28.5
As you can see, the halfway number is 28.5 higher than 55 and 28.5 lower than 112. Therefore, our halfway between answer of 83.5 above is correct.
Halfway Between
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Halfway Between 55 and 113
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