When you ask "What number is halfway between 64 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=64 and Y=857.
To find the number halfway between 64 and 857, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 64 and 857 into our formula, we get:
(64 + 857)/2 = 460.5
Thus, the number halfway between 64 and 857 is 460.5.
To check that our answer is correct, we subtract 64 from 460.5 and subtract 460.5 from 857 and compare the two numbers:
460.5 - 64 = 396.5
857 - 460.5 = 396.5
As you can see, the halfway number is 396.5 higher than 64 and 396.5 lower than 857. Therefore, our halfway between answer of 460.5 above is correct.
Halfway Between
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Halfway Between 64 and 858
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