When you ask "What number is halfway between 74 and 817?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=74 and Y=817.
To find the number halfway between 74 and 817, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 74 and 817 into our formula, we get:
(74 + 817)/2 = 445.5
Thus, the number halfway between 74 and 817 is 445.5.
To check that our answer is correct, we subtract 74 from 445.5 and subtract 445.5 from 817 and compare the two numbers:
445.5 - 74 = 371.5
817 - 445.5 = 371.5
As you can see, the halfway number is 371.5 higher than 74 and 371.5 lower than 817. Therefore, our halfway between answer of 445.5 above is correct.
Halfway Between
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Halfway Between 74 and 818
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