When you ask "What number is halfway between 12 and 931?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=12 and Y=931.
To find the number halfway between 12 and 931, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 12 and 931 into our formula, we get:
(12 + 931)/2 = 471.5
Thus, the number halfway between 12 and 931 is 471.5.
To check that our answer is correct, we subtract 12 from 471.5 and subtract 471.5 from 931 and compare the two numbers:
471.5 - 12 = 459.5
931 - 471.5 = 459.5
As you can see, the halfway number is 459.5 higher than 12 and 459.5 lower than 931. Therefore, our halfway between answer of 471.5 above is correct.
Halfway Between
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Halfway Between 12 and 932
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