When you ask "What number is halfway between 68 and 855?" 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=855.
To find the number halfway between 68 and 855, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 68 and 855 into our formula, we get:
(68 + 855)/2 = 461.5
Thus, the number halfway between 68 and 855 is 461.5.
To check that our answer is correct, we subtract 68 from 461.5 and subtract 461.5 from 855 and compare the two numbers:
461.5 - 68 = 393.5
855 - 461.5 = 393.5
As you can see, the halfway number is 393.5 higher than 68 and 393.5 lower than 855. Therefore, our halfway between answer of 461.5 above is correct.
Halfway Between
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Halfway Between 68 and 856
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