When you ask "What number is halfway between 30 and 347?" 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=347.
To find the number halfway between 30 and 347, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 347 into our formula, we get:
(30 + 347)/2 = 188.5
Thus, the number halfway between 30 and 347 is 188.5.
To check that our answer is correct, we subtract 30 from 188.5 and subtract 188.5 from 347 and compare the two numbers:
188.5 - 30 = 158.5
347 - 188.5 = 158.5
As you can see, the halfway number is 158.5 higher than 30 and 158.5 lower than 347. Therefore, our halfway between answer of 188.5 above is correct.
Halfway Between
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Halfway Between 30 and 348
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