When you ask "What number is halfway between 12 and 485?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=12 and Y=485.
To find the number halfway between 12 and 485, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 12 and 485 into our formula, we get:
(12 + 485)/2 = 248.5
Thus, the number halfway between 12 and 485 is 248.5.
To check that our answer is correct, we subtract 12 from 248.5 and subtract 248.5 from 485 and compare the two numbers:
248.5 - 12 = 236.5
485 - 248.5 = 236.5
As you can see, the halfway number is 236.5 higher than 12 and 236.5 lower than 485. Therefore, our halfway between answer of 248.5 above is correct.
Halfway Between
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Halfway Between 12 and 486
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