
When you ask "What number is halfway between 30 and 252?" 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=252.

To find the number halfway between 30 and 252, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 252 into our formula, we get:
(30 + 252)/2 = 141
Thus, the number halfway between 30 and 252 is 141.
To check that our answer is correct, we subtract 30 from 141 and subtract 141 from 252 and compare the two numbers:
141 - 30 = 111
252 - 141 = 111
As you can see, the halfway number is 111 higher than 30 and 111 lower than 252. Therefore, our halfway between answer of 141 above is correct.
Halfway Between
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Halfway Between 30 and 253
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