When you ask "What number is halfway between 18 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=18 and Y=718.
To find the number halfway between 18 and 718, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 718 into our formula, we get:
(18 + 718)/2 = 368
Thus, the number halfway between 18 and 718 is 368.
To check that our answer is correct, we subtract 18 from 368 and subtract 368 from 718 and compare the two numbers:
368 - 18 = 350
718 - 368 = 350
As you can see, the halfway number is 350 higher than 18 and 350 lower than 718. Therefore, our halfway between answer of 368 above is correct.
Halfway Between
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Halfway Between 18 and 719
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