When you ask "What number is halfway between 31 and 498?" 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=498.
To find the number halfway between 31 and 498, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 498 into our formula, we get:
(31 + 498)/2 = 264.5
Thus, the number halfway between 31 and 498 is 264.5.
To check that our answer is correct, we subtract 31 from 264.5 and subtract 264.5 from 498 and compare the two numbers:
264.5 - 31 = 233.5
498 - 264.5 = 233.5
As you can see, the halfway number is 233.5 higher than 31 and 233.5 lower than 498. Therefore, our halfway between answer of 264.5 above is correct.
Halfway Between
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Halfway Between 31 and 499
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