When you ask "What number is halfway between 68 and 843?" 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=843.
To find the number halfway between 68 and 843, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 68 and 843 into our formula, we get:
(68 + 843)/2 = 455.5
Thus, the number halfway between 68 and 843 is 455.5.
To check that our answer is correct, we subtract 68 from 455.5 and subtract 455.5 from 843 and compare the two numbers:
455.5 - 68 = 387.5
843 - 455.5 = 387.5
As you can see, the halfway number is 387.5 higher than 68 and 387.5 lower than 843. Therefore, our halfway between answer of 455.5 above is correct.
Halfway Between
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Halfway Between 68 and 844
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