When you ask "What number is halfway between 31 and 676?" 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=676.
To find the number halfway between 31 and 676, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 676 into our formula, we get:
(31 + 676)/2 = 353.5
Thus, the number halfway between 31 and 676 is 353.5.
To check that our answer is correct, we subtract 31 from 353.5 and subtract 353.5 from 676 and compare the two numbers:
353.5 - 31 = 322.5
676 - 353.5 = 322.5
As you can see, the halfway number is 322.5 higher than 31 and 322.5 lower than 676. Therefore, our halfway between answer of 353.5 above is correct.
Halfway Between
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Halfway Between 31 and 677
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