When you ask "What number is halfway between 85 and 742?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=85 and Y=742.
To find the number halfway between 85 and 742, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 85 and 742 into our formula, we get:
(85 + 742)/2 = 413.5
Thus, the number halfway between 85 and 742 is 413.5.
To check that our answer is correct, we subtract 85 from 413.5 and subtract 413.5 from 742 and compare the two numbers:
413.5 - 85 = 328.5
742 - 413.5 = 328.5
As you can see, the halfway number is 328.5 higher than 85 and 328.5 lower than 742. Therefore, our halfway between answer of 413.5 above is correct.
Halfway Between
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Halfway Between 85 and 743
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