When you ask "What number is halfway between 12 and 827?" 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=827.
To find the number halfway between 12 and 827, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 12 and 827 into our formula, we get:
(12 + 827)/2 = 419.5
Thus, the number halfway between 12 and 827 is 419.5.
To check that our answer is correct, we subtract 12 from 419.5 and subtract 419.5 from 827 and compare the two numbers:
419.5 - 12 = 407.5
827 - 419.5 = 407.5
As you can see, the halfway number is 407.5 higher than 12 and 407.5 lower than 827. Therefore, our halfway between answer of 419.5 above is correct.
Halfway Between
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Halfway Between 12 and 828
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