When you ask "What number is halfway between 68 and 871?" 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=871.
To find the number halfway between 68 and 871, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 68 and 871 into our formula, we get:
(68 + 871)/2 = 469.5
Thus, the number halfway between 68 and 871 is 469.5.
To check that our answer is correct, we subtract 68 from 469.5 and subtract 469.5 from 871 and compare the two numbers:
469.5 - 68 = 401.5
871 - 469.5 = 401.5
As you can see, the halfway number is 401.5 higher than 68 and 401.5 lower than 871. Therefore, our halfway between answer of 469.5 above is correct.
Halfway Between
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Halfway Between 68 and 872
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