When you ask "What number is halfway between 18 and 484?" 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=484.
To find the number halfway between 18 and 484, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 484 into our formula, we get:
(18 + 484)/2 = 251
Thus, the number halfway between 18 and 484 is 251.
To check that our answer is correct, we subtract 18 from 251 and subtract 251 from 484 and compare the two numbers:
251 - 18 = 233
484 - 251 = 233
As you can see, the halfway number is 233 higher than 18 and 233 lower than 484. Therefore, our halfway between answer of 251 above is correct.
Halfway Between
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Halfway Between 18 and 485
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