When you ask "What number is halfway between 18 and 713?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=18 and Y=713.
To find the number halfway between 18 and 713, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 713 into our formula, we get:
(18 + 713)/2 = 365.5
Thus, the number halfway between 18 and 713 is 365.5.
To check that our answer is correct, we subtract 18 from 365.5 and subtract 365.5 from 713 and compare the two numbers:
365.5 - 18 = 347.5
713 - 365.5 = 347.5
As you can see, the halfway number is 347.5 higher than 18 and 347.5 lower than 713. Therefore, our halfway between answer of 365.5 above is correct.
Halfway Between
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