When you ask "What number is halfway between 57 and 850?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=57 and Y=850.
To find the number halfway between 57 and 850, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 57 and 850 into our formula, we get:
(57 + 850)/2 = 453.5
Thus, the number halfway between 57 and 850 is 453.5.
To check that our answer is correct, we subtract 57 from 453.5 and subtract 453.5 from 850 and compare the two numbers:
453.5 - 57 = 396.5
850 - 453.5 = 396.5
As you can see, the halfway number is 396.5 higher than 57 and 396.5 lower than 850. Therefore, our halfway between answer of 453.5 above is correct.
Halfway Between
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