When you ask "What number is halfway between 63 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=63 and Y=780.
To find the number halfway between 63 and 780, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 63 and 780 into our formula, we get:
(63 + 780)/2 = 421.5
Thus, the number halfway between 63 and 780 is 421.5.
To check that our answer is correct, we subtract 63 from 421.5 and subtract 421.5 from 780 and compare the two numbers:
421.5 - 63 = 358.5
780 - 421.5 = 358.5
As you can see, the halfway number is 358.5 higher than 63 and 358.5 lower than 780. Therefore, our halfway between answer of 421.5 above is correct.
Halfway Between
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