When you ask "What number is halfway between 30 and 750?" 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=750.
To find the number halfway between 30 and 750, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 750 into our formula, we get:
(30 + 750)/2 = 390
Thus, the number halfway between 30 and 750 is 390.
To check that our answer is correct, we subtract 30 from 390 and subtract 390 from 750 and compare the two numbers:
390 - 30 = 360
750 - 390 = 360
As you can see, the halfway number is 360 higher than 30 and 360 lower than 750. Therefore, our halfway between answer of 390 above is correct.
Halfway Between
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