When you ask "What number is halfway between 31 and 682?" 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=682.
To find the number halfway between 31 and 682, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 682 into our formula, we get:
(31 + 682)/2 = 356.5
Thus, the number halfway between 31 and 682 is 356.5.
To check that our answer is correct, we subtract 31 from 356.5 and subtract 356.5 from 682 and compare the two numbers:
356.5 - 31 = 325.5
682 - 356.5 = 325.5
As you can see, the halfway number is 325.5 higher than 31 and 325.5 lower than 682. Therefore, our halfway between answer of 356.5 above is correct.
Halfway Between
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Halfway Between 31 and 683
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