When you ask "What number is halfway between 30 and 743?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=30 and Y=743.
To find the number halfway between 30 and 743, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 743 into our formula, we get:
(30 + 743)/2 = 386.5
Thus, the number halfway between 30 and 743 is 386.5.
To check that our answer is correct, we subtract 30 from 386.5 and subtract 386.5 from 743 and compare the two numbers:
386.5 - 30 = 356.5
743 - 386.5 = 356.5
As you can see, the halfway number is 356.5 higher than 30 and 356.5 lower than 743. Therefore, our halfway between answer of 386.5 above is correct.
Halfway Between
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Halfway Between 30 and 744
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