When you ask "What number is halfway between 2 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=2 and Y=843.
To find the number halfway between 2 and 843, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 2 and 843 into our formula, we get:
(2 + 843)/2 = 422.5
Thus, the number halfway between 2 and 843 is 422.5.
To check that our answer is correct, we subtract 2 from 422.5 and subtract 422.5 from 843 and compare the two numbers:
422.5 - 2 = 420.5
843 - 422.5 = 420.5
As you can see, the halfway number is 420.5 higher than 2 and 420.5 lower than 843. Therefore, our halfway between answer of 422.5 above is correct.
Halfway Between
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Halfway Between 2 and 844
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