When you ask "What number is halfway between 30 and 745?" 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=745.
To find the number halfway between 30 and 745, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 745 into our formula, we get:
(30 + 745)/2 = 387.5
Thus, the number halfway between 30 and 745 is 387.5.
To check that our answer is correct, we subtract 30 from 387.5 and subtract 387.5 from 745 and compare the two numbers:
387.5 - 30 = 357.5
745 - 387.5 = 357.5
As you can see, the halfway number is 357.5 higher than 30 and 357.5 lower than 745. Therefore, our halfway between answer of 387.5 above is correct.
Halfway Between
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Halfway Between 30 and 746
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