When you ask "What number is halfway between 15 and 480?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=15 and Y=480.
To find the number halfway between 15 and 480, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 15 and 480 into our formula, we get:
(15 + 480)/2 = 247.5
Thus, the number halfway between 15 and 480 is 247.5.
To check that our answer is correct, we subtract 15 from 247.5 and subtract 247.5 from 480 and compare the two numbers:
247.5 - 15 = 232.5
480 - 247.5 = 232.5
As you can see, the halfway number is 232.5 higher than 15 and 232.5 lower than 480. Therefore, our halfway between answer of 247.5 above is correct.
Halfway Between
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Halfway Between 15 and 481
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