When you ask "What number is halfway between 30 and 747?" 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=747.
To find the number halfway between 30 and 747, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 747 into our formula, we get:
(30 + 747)/2 = 388.5
Thus, the number halfway between 30 and 747 is 388.5.
To check that our answer is correct, we subtract 30 from 388.5 and subtract 388.5 from 747 and compare the two numbers:
388.5 - 30 = 358.5
747 - 388.5 = 358.5
As you can see, the halfway number is 358.5 higher than 30 and 358.5 lower than 747. Therefore, our halfway between answer of 388.5 above is correct.
Halfway Between
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Halfway Between 30 and 748
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