When you ask "What number is halfway between 55 and 177?" 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=177.
To find the number halfway between 55 and 177, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 55 and 177 into our formula, we get:
(55 + 177)/2 = 116
Thus, the number halfway between 55 and 177 is 116.
To check that our answer is correct, we subtract 55 from 116 and subtract 116 from 177 and compare the two numbers:
116 - 55 = 61
177 - 116 = 61
As you can see, the halfway number is 61 higher than 55 and 61 lower than 177. Therefore, our halfway between answer of 116 above is correct.
Halfway Between
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Halfway Between 55 and 178
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