
When you ask "What number is halfway between 12 and 780?" 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=780.

To find the number halfway between 12 and 780, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 12 and 780 into our formula, we get:
(12 + 780)/2 = 396
Thus, the number halfway between 12 and 780 is 396.
To check that our answer is correct, we subtract 12 from 396 and subtract 396 from 780 and compare the two numbers:
396 - 12 = 384
780 - 396 = 384
As you can see, the halfway number is 384 higher than 12 and 384 lower than 780. Therefore, our halfway between answer of 396 above is correct.
Halfway Between
Find halfway between two other numbers here!
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