When you ask "What number is halfway between 31 and 246?" 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=246.
To find the number halfway between 31 and 246, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 246 into our formula, we get:
(31 + 246)/2 = 138.5
Thus, the number halfway between 31 and 246 is 138.5.
To check that our answer is correct, we subtract 31 from 138.5 and subtract 138.5 from 246 and compare the two numbers:
138.5 - 31 = 107.5
246 - 138.5 = 107.5
As you can see, the halfway number is 107.5 higher than 31 and 107.5 lower than 246. Therefore, our halfway between answer of 138.5 above is correct.
Halfway Between
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Halfway Between 31 and 247
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