When you ask "What number is halfway between 30 and 755?" 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=755.
To find the number halfway between 30 and 755, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 755 into our formula, we get:
(30 + 755)/2 = 392.5
Thus, the number halfway between 30 and 755 is 392.5.
To check that our answer is correct, we subtract 30 from 392.5 and subtract 392.5 from 755 and compare the two numbers:
392.5 - 30 = 362.5
755 - 392.5 = 362.5
As you can see, the halfway number is 362.5 higher than 30 and 362.5 lower than 755. Therefore, our halfway between answer of 392.5 above is correct.
Halfway Between
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Halfway Between 30 and 756
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