When you ask "What number is halfway between 3 and 82?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=3 and Y=82.
To find the number halfway between 3 and 82, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 82 into our formula, we get:
(3 + 82)/2 = 42.5
Thus, the number halfway between 3 and 82 is 42.5.
To check that our answer is correct, we subtract 3 from 42.5 and subtract 42.5 from 82 and compare the two numbers:
42.5 - 3 = 39.5
82 - 42.5 = 39.5
As you can see, the halfway number is 39.5 higher than 3 and 39.5 lower than 82. Therefore, our halfway between answer of 42.5 above is correct.
Halfway Between
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Halfway Between 3 and 83
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