When you ask "What number is halfway between 17 and 880?" 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=880.
To find the number halfway between 17 and 880, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 880 into our formula, we get:
(17 + 880)/2 = 448.5
Thus, the number halfway between 17 and 880 is 448.5.
To check that our answer is correct, we subtract 17 from 448.5 and subtract 448.5 from 880 and compare the two numbers:
448.5 - 17 = 431.5
880 - 448.5 = 431.5
As you can see, the halfway number is 431.5 higher than 17 and 431.5 lower than 880. Therefore, our halfway between answer of 448.5 above is correct.
Halfway Between
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Halfway Between 17 and 881
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