When you ask "What number is halfway between 57 and 166?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=57 and Y=166.
To find the number halfway between 57 and 166, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 57 and 166 into our formula, we get:
(57 + 166)/2 = 111.5
Thus, the number halfway between 57 and 166 is 111.5.
To check that our answer is correct, we subtract 57 from 111.5 and subtract 111.5 from 166 and compare the two numbers:
111.5 - 57 = 54.5
166 - 111.5 = 54.5
As you can see, the halfway number is 54.5 higher than 57 and 54.5 lower than 166. Therefore, our halfway between answer of 111.5 above is correct.
Halfway Between
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Halfway Between 57 and 167
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