When you ask "What number is halfway between 42 and 187?" 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=187.
To find the number halfway between 42 and 187, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 187 into our formula, we get:
(42 + 187)/2 = 114.5
Thus, the number halfway between 42 and 187 is 114.5.
To check that our answer is correct, we subtract 42 from 114.5 and subtract 114.5 from 187 and compare the two numbers:
114.5 - 42 = 72.5
187 - 114.5 = 72.5
As you can see, the halfway number is 72.5 higher than 42 and 72.5 lower than 187. Therefore, our halfway between answer of 114.5 above is correct.
Halfway Between
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Halfway Between 42 and 188
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