When you ask "What number is halfway between 31 and 634?" 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=634.
To find the number halfway between 31 and 634, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 634 into our formula, we get:
(31 + 634)/2 = 332.5
Thus, the number halfway between 31 and 634 is 332.5.
To check that our answer is correct, we subtract 31 from 332.5 and subtract 332.5 from 634 and compare the two numbers:
332.5 - 31 = 301.5
634 - 332.5 = 301.5
As you can see, the halfway number is 301.5 higher than 31 and 301.5 lower than 634. Therefore, our halfway between answer of 332.5 above is correct.
Halfway Between
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Halfway Between 31 and 635
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