When you ask "What number is halfway between 11 and 718?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=11 and Y=718.
To find the number halfway between 11 and 718, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 11 and 718 into our formula, we get:
(11 + 718)/2 = 364.5
Thus, the number halfway between 11 and 718 is 364.5.
To check that our answer is correct, we subtract 11 from 364.5 and subtract 364.5 from 718 and compare the two numbers:
364.5 - 11 = 353.5
718 - 364.5 = 353.5
As you can see, the halfway number is 353.5 higher than 11 and 353.5 lower than 718. Therefore, our halfway between answer of 364.5 above is correct.
Halfway Between
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Halfway Between 11 and 719
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