When you ask "What number is halfway between 30 and 329?" 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=329.
To find the number halfway between 30 and 329, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 329 into our formula, we get:
(30 + 329)/2 = 179.5
Thus, the number halfway between 30 and 329 is 179.5.
To check that our answer is correct, we subtract 30 from 179.5 and subtract 179.5 from 329 and compare the two numbers:
179.5 - 30 = 149.5
329 - 179.5 = 149.5
As you can see, the halfway number is 149.5 higher than 30 and 149.5 lower than 329. Therefore, our halfway between answer of 179.5 above is correct.
Halfway Between
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Halfway Between 30 and 330
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