When you ask "What number is halfway between 30 and 903?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=30 and Y=903.
To find the number halfway between 30 and 903, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 903 into our formula, we get:
(30 + 903)/2 = 466.5
Thus, the number halfway between 30 and 903 is 466.5.
To check that our answer is correct, we subtract 30 from 466.5 and subtract 466.5 from 903 and compare the two numbers:
466.5 - 30 = 436.5
903 - 466.5 = 436.5
As you can see, the halfway number is 436.5 higher than 30 and 436.5 lower than 903. Therefore, our halfway between answer of 466.5 above is correct.
Halfway Between
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Halfway Between 30 and 904
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