When you ask "What number is halfway between 42 and 723?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=42 and Y=723.
To find the number halfway between 42 and 723, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 723 into our formula, we get:
(42 + 723)/2 = 382.5
Thus, the number halfway between 42 and 723 is 382.5.
To check that our answer is correct, we subtract 42 from 382.5 and subtract 382.5 from 723 and compare the two numbers:
382.5 - 42 = 340.5
723 - 382.5 = 340.5
As you can see, the halfway number is 340.5 higher than 42 and 340.5 lower than 723. Therefore, our halfway between answer of 382.5 above is correct.
Halfway Between
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Halfway Between 42 and 724
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