When you ask "What number is halfway between 55 and 286?" 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=286.
To find the number halfway between 55 and 286, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 55 and 286 into our formula, we get:
(55 + 286)/2 = 170.5
Thus, the number halfway between 55 and 286 is 170.5.
To check that our answer is correct, we subtract 55 from 170.5 and subtract 170.5 from 286 and compare the two numbers:
170.5 - 55 = 115.5
286 - 170.5 = 115.5
As you can see, the halfway number is 115.5 higher than 55 and 115.5 lower than 286. Therefore, our halfway between answer of 170.5 above is correct.
Halfway Between
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Halfway Between 55 and 287
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