When you ask "What number is halfway between 18 and 481?" 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=481.
To find the number halfway between 18 and 481, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 481 into our formula, we get:
(18 + 481)/2 = 249.5
Thus, the number halfway between 18 and 481 is 249.5.
To check that our answer is correct, we subtract 18 from 249.5 and subtract 249.5 from 481 and compare the two numbers:
249.5 - 18 = 231.5
481 - 249.5 = 231.5
As you can see, the halfway number is 231.5 higher than 18 and 231.5 lower than 481. Therefore, our halfway between answer of 249.5 above is correct.
Halfway Between
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Halfway Between 18 and 482
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