When you ask "What number is halfway between 48 and 857?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=48 and Y=857.
To find the number halfway between 48 and 857, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 48 and 857 into our formula, we get:
(48 + 857)/2 = 452.5
Thus, the number halfway between 48 and 857 is 452.5.
To check that our answer is correct, we subtract 48 from 452.5 and subtract 452.5 from 857 and compare the two numbers:
452.5 - 48 = 404.5
857 - 452.5 = 404.5
As you can see, the halfway number is 404.5 higher than 48 and 404.5 lower than 857. Therefore, our halfway between answer of 452.5 above is correct.
Halfway Between
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Halfway Between 48 and 858
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