When you ask "What number is halfway between 25 and 488?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=25 and Y=488.
To find the number halfway between 25 and 488, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 25 and 488 into our formula, we get:
(25 + 488)/2 = 256.5
Thus, the number halfway between 25 and 488 is 256.5.
To check that our answer is correct, we subtract 25 from 256.5 and subtract 256.5 from 488 and compare the two numbers:
256.5 - 25 = 231.5
488 - 256.5 = 231.5
As you can see, the halfway number is 231.5 higher than 25 and 231.5 lower than 488. Therefore, our halfway between answer of 256.5 above is correct.
Halfway Between
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Halfway Between 25 and 489
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