When you ask "What number is halfway between 71 and 188?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=71 and Y=188.
To find the number halfway between 71 and 188, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 71 and 188 into our formula, we get:
(71 + 188)/2 = 129.5
Thus, the number halfway between 71 and 188 is 129.5.
To check that our answer is correct, we subtract 71 from 129.5 and subtract 129.5 from 188 and compare the two numbers:
129.5 - 71 = 58.5
188 - 129.5 = 58.5
As you can see, the halfway number is 58.5 higher than 71 and 58.5 lower than 188. Therefore, our halfway between answer of 129.5 above is correct.
Halfway Between
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Halfway Between 71 and 189
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