When you ask "What number is halfway between 42 and 717?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=42 and Y=717.
To find the number halfway between 42 and 717, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 42 and 717 into our formula, we get:
(42 + 717)/2 = 379.5
Thus, the number halfway between 42 and 717 is 379.5.
To check that our answer is correct, we subtract 42 from 379.5 and subtract 379.5 from 717 and compare the two numbers:
379.5 - 42 = 337.5
717 - 379.5 = 337.5
As you can see, the halfway number is 337.5 higher than 42 and 337.5 lower than 717. Therefore, our halfway between answer of 379.5 above is correct.
Halfway Between
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Halfway Between 42 and 718
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