When you ask "What number is halfway between 17 and 902?" 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=902.
To find the number halfway between 17 and 902, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 902 into our formula, we get:
(17 + 902)/2 = 459.5
Thus, the number halfway between 17 and 902 is 459.5.
To check that our answer is correct, we subtract 17 from 459.5 and subtract 459.5 from 902 and compare the two numbers:
459.5 - 17 = 442.5
902 - 459.5 = 442.5
As you can see, the halfway number is 442.5 higher than 17 and 442.5 lower than 902. Therefore, our halfway between answer of 459.5 above is correct.
Halfway Between
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Halfway Between 17 and 903
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