When you ask "What number is halfway between 68 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=68 and Y=485.
To find the number halfway between 68 and 485, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 68 and 485 into our formula, we get:
(68 + 485)/2 = 276.5
Thus, the number halfway between 68 and 485 is 276.5.
To check that our answer is correct, we subtract 68 from 276.5 and subtract 276.5 from 485 and compare the two numbers:
276.5 - 68 = 208.5
485 - 276.5 = 208.5
As you can see, the halfway number is 208.5 higher than 68 and 208.5 lower than 485. Therefore, our halfway between answer of 276.5 above is correct.
Halfway Between
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Halfway Between 68 and 486
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