When you ask "What number is halfway between 75 and 830?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=75 and Y=830.
To find the number halfway between 75 and 830, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 75 and 830 into our formula, we get:
(75 + 830)/2 = 452.5
Thus, the number halfway between 75 and 830 is 452.5.
To check that our answer is correct, we subtract 75 from 452.5 and subtract 452.5 from 830 and compare the two numbers:
452.5 - 75 = 377.5
830 - 452.5 = 377.5
As you can see, the halfway number is 377.5 higher than 75 and 377.5 lower than 830. Therefore, our halfway between answer of 452.5 above is correct.
Halfway Between
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Halfway Between 75 and 831
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