When you ask "What number is halfway between 82 and 213?" 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=213.
To find the number halfway between 82 and 213, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 82 and 213 into our formula, we get:
(82 + 213)/2 = 147.5
Thus, the number halfway between 82 and 213 is 147.5.
To check that our answer is correct, we subtract 82 from 147.5 and subtract 147.5 from 213 and compare the two numbers:
147.5 - 82 = 65.5
213 - 147.5 = 65.5
As you can see, the halfway number is 65.5 higher than 82 and 65.5 lower than 213. Therefore, our halfway between answer of 147.5 above is correct.
Halfway Between
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Halfway Between 82 and 214
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