When you ask "What number is halfway between 42 and 180?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=42 and Y=180.
To find the number halfway between 42 and 180, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 180 into our formula, we get:
(42 + 180)/2 = 111
Thus, the number halfway between 42 and 180 is 111.
To check that our answer is correct, we subtract 42 from 111 and subtract 111 from 180 and compare the two numbers:
111 - 42 = 69
180 - 111 = 69
As you can see, the halfway number is 69 higher than 42 and 69 lower than 180. Therefore, our halfway between answer of 111 above is correct.
Halfway Between
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Halfway Between 42 and 181
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