When you ask "What number is halfway between 30 and 339?" 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=339.
To find the number halfway between 30 and 339, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 339 into our formula, we get:
(30 + 339)/2 = 184.5
Thus, the number halfway between 30 and 339 is 184.5.
To check that our answer is correct, we subtract 30 from 184.5 and subtract 184.5 from 339 and compare the two numbers:
184.5 - 30 = 154.5
339 - 184.5 = 154.5
As you can see, the halfway number is 154.5 higher than 30 and 154.5 lower than 339. Therefore, our halfway between answer of 184.5 above is correct.
Halfway Between
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Halfway Between 30 and 340
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