When you ask "What number is halfway between 16 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=16 and Y=857.
To find the number halfway between 16 and 857, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 16 and 857 into our formula, we get:
(16 + 857)/2 = 436.5
Thus, the number halfway between 16 and 857 is 436.5.
To check that our answer is correct, we subtract 16 from 436.5 and subtract 436.5 from 857 and compare the two numbers:
436.5 - 16 = 420.5
857 - 436.5 = 420.5
As you can see, the halfway number is 420.5 higher than 16 and 420.5 lower than 857. Therefore, our halfway between answer of 436.5 above is correct.
Halfway Between
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Halfway Between 16 and 858
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