When you ask "What number is halfway between 30 and 887?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=30 and Y=887.
To find the number halfway between 30 and 887, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 887 into our formula, we get:
(30 + 887)/2 = 458.5
Thus, the number halfway between 30 and 887 is 458.5.
To check that our answer is correct, we subtract 30 from 458.5 and subtract 458.5 from 887 and compare the two numbers:
458.5 - 30 = 428.5
887 - 458.5 = 428.5
As you can see, the halfway number is 428.5 higher than 30 and 428.5 lower than 887. Therefore, our halfway between answer of 458.5 above is correct.
Halfway Between
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Halfway Between 30 and 888
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