When you ask "What number is halfway between 42 and 589?" 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=589.
To find the number halfway between 42 and 589, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 589 into our formula, we get:
(42 + 589)/2 = 315.5
Thus, the number halfway between 42 and 589 is 315.5.
To check that our answer is correct, we subtract 42 from 315.5 and subtract 315.5 from 589 and compare the two numbers:
315.5 - 42 = 273.5
589 - 315.5 = 273.5
As you can see, the halfway number is 273.5 higher than 42 and 273.5 lower than 589. Therefore, our halfway between answer of 315.5 above is correct.
Halfway Between
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Halfway Between 42 and 590
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