When you ask "What number is halfway between 0 and 999?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=0 and Y=999.
To find the number halfway between 0 and 999, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 0 and 999 into our formula, we get:
(0 + 999)/2 = 499.5
Thus, the number halfway between 0 and 999 is 499.5.
To check that our answer is correct, we subtract 0 from 499.5 and subtract 499.5 from 999 and compare the two numbers:
499.5 - 0 = 499.5
999 - 499.5 = 499.5
As you can see, the halfway number is 499.5 higher than 0 and 499.5 lower than 999. Therefore, our halfway between answer of 499.5 above is correct.
Halfway Between
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Halfway Between 0 and 1000
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