When you ask "What number is halfway between 17 and 742?" 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=742.
To find the number halfway between 17 and 742, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 742 into our formula, we get:
(17 + 742)/2 = 379.5
Thus, the number halfway between 17 and 742 is 379.5.
To check that our answer is correct, we subtract 17 from 379.5 and subtract 379.5 from 742 and compare the two numbers:
379.5 - 17 = 362.5
742 - 379.5 = 362.5
As you can see, the halfway number is 362.5 higher than 17 and 362.5 lower than 742. Therefore, our halfway between answer of 379.5 above is correct.
Halfway Between
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Halfway Between 17 and 743
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