When you ask "What number is halfway between 18 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=18 and Y=887.
To find the number halfway between 18 and 887, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 887 into our formula, we get:
(18 + 887)/2 = 452.5
Thus, the number halfway between 18 and 887 is 452.5.
To check that our answer is correct, we subtract 18 from 452.5 and subtract 452.5 from 887 and compare the two numbers:
452.5 - 18 = 434.5
887 - 452.5 = 434.5
As you can see, the halfway number is 434.5 higher than 18 and 434.5 lower than 887. Therefore, our halfway between answer of 452.5 above is correct.
Halfway Between
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Halfway Between 18 and 888
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