When you ask "What number is halfway between 18 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=18 and Y=252.
To find the number halfway between 18 and 252, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 252 into our formula, we get:
(18 + 252)/2 = 135
Thus, the number halfway between 18 and 252 is 135.
To check that our answer is correct, we subtract 18 from 135 and subtract 135 from 252 and compare the two numbers:
135 - 18 = 117
252 - 135 = 117
As you can see, the halfway number is 117 higher than 18 and 117 lower than 252. Therefore, our halfway between answer of 135 above is correct.
Halfway Between
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Halfway Between 18 and 253
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