When you ask "What number is halfway between 31 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=31 and Y=718.
To find the number halfway between 31 and 718, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 718 into our formula, we get:
(31 + 718)/2 = 374.5
Thus, the number halfway between 31 and 718 is 374.5.
To check that our answer is correct, we subtract 31 from 374.5 and subtract 374.5 from 718 and compare the two numbers:
374.5 - 31 = 343.5
718 - 374.5 = 343.5
As you can see, the halfway number is 343.5 higher than 31 and 343.5 lower than 718. Therefore, our halfway between answer of 374.5 above is correct.
Halfway Between
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Halfway Between 31 and 719
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