
When you ask "What number is halfway between 17 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=17 and Y=888.

To find the number halfway between 17 and 888, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 888 into our formula, we get:
(17 + 888)/2 = 452.5
Thus, the number halfway between 17 and 888 is 452.5.
To check that our answer is correct, we subtract 17 from 452.5 and subtract 452.5 from 888 and compare the two numbers:
452.5 - 17 = 435.5
888 - 452.5 = 435.5
As you can see, the halfway number is 435.5 higher than 17 and 435.5 lower than 888. Therefore, our halfway between answer of 452.5 above is correct.
Halfway Between
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Halfway Between 17 and 889
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