When you ask "What number is halfway between 12 and 677?" 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=677.
To find the number halfway between 12 and 677, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 12 and 677 into our formula, we get:
(12 + 677)/2 = 344.5
Thus, the number halfway between 12 and 677 is 344.5.
To check that our answer is correct, we subtract 12 from 344.5 and subtract 344.5 from 677 and compare the two numbers:
344.5 - 12 = 332.5
677 - 344.5 = 332.5
As you can see, the halfway number is 332.5 higher than 12 and 332.5 lower than 677. Therefore, our halfway between answer of 344.5 above is correct.
Halfway Between
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Halfway Between 12 and 678
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