When you ask "What number is halfway between 18 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=18 and Y=82.
To find the number halfway between 18 and 82, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 82 into our formula, we get:
(18 + 82)/2 = 50
Thus, the number halfway between 18 and 82 is 50.
To check that our answer is correct, we subtract 18 from 50 and subtract 50 from 82 and compare the two numbers:
50 - 18 = 32
82 - 50 = 32
As you can see, the halfway number is 32 higher than 18 and 32 lower than 82. Therefore, our halfway between answer of 50 above is correct.
Halfway Between
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Halfway Between 18 and 83
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