When you ask "What number is halfway between 31 and 888?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=31 and Y=888.
To find the number halfway between 31 and 888, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 888 into our formula, we get:
(31 + 888)/2 = 459.5
Thus, the number halfway between 31 and 888 is 459.5.
To check that our answer is correct, we subtract 31 from 459.5 and subtract 459.5 from 888 and compare the two numbers:
459.5 - 31 = 428.5
888 - 459.5 = 428.5
As you can see, the halfway number is 428.5 higher than 31 and 428.5 lower than 888. Therefore, our halfway between answer of 459.5 above is correct.
Halfway Between
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Halfway Between 31 and 889
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