When you ask "What number is halfway between 8 and 631?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=8 and Y=631.
To find the number halfway between 8 and 631, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 631 into our formula, we get:
(8 + 631)/2 = 319.5
Thus, the number halfway between 8 and 631 is 319.5.
To check that our answer is correct, we subtract 8 from 319.5 and subtract 319.5 from 631 and compare the two numbers:
319.5 - 8 = 311.5
631 - 319.5 = 311.5
As you can see, the halfway number is 311.5 higher than 8 and 311.5 lower than 631. Therefore, our halfway between answer of 319.5 above is correct.
Halfway Between
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Halfway Between 8 and 632
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