When you ask "What number is halfway between 30 and 725?" 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=725.
To find the number halfway between 30 and 725, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 725 into our formula, we get:
(30 + 725)/2 = 377.5
Thus, the number halfway between 30 and 725 is 377.5.
To check that our answer is correct, we subtract 30 from 377.5 and subtract 377.5 from 725 and compare the two numbers:
377.5 - 30 = 347.5
725 - 377.5 = 347.5
As you can see, the halfway number is 347.5 higher than 30 and 347.5 lower than 725. Therefore, our halfway between answer of 377.5 above is correct.
Halfway Between
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Halfway Between 30 and 726
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