When you ask "What number is halfway between 82 and 311?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=82 and Y=311.
To find the number halfway between 82 and 311, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 82 and 311 into our formula, we get:
(82 + 311)/2 = 196.5
Thus, the number halfway between 82 and 311 is 196.5.
To check that our answer is correct, we subtract 82 from 196.5 and subtract 196.5 from 311 and compare the two numbers:
196.5 - 82 = 114.5
311 - 196.5 = 114.5
As you can see, the halfway number is 114.5 higher than 82 and 114.5 lower than 311. Therefore, our halfway between answer of 196.5 above is correct.
Halfway Between
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Halfway Between 82 and 312
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