When you ask "What number is halfway between 74 and 729?" 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=729.
To find the number halfway between 74 and 729, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 74 and 729 into our formula, we get:
(74 + 729)/2 = 401.5
Thus, the number halfway between 74 and 729 is 401.5.
To check that our answer is correct, we subtract 74 from 401.5 and subtract 401.5 from 729 and compare the two numbers:
401.5 - 74 = 327.5
729 - 401.5 = 327.5
As you can see, the halfway number is 327.5 higher than 74 and 327.5 lower than 729. Therefore, our halfway between answer of 401.5 above is correct.
Halfway Between
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Halfway Between 74 and 730
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