When you ask "What number is halfway between 49 and 978?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=49 and Y=978.
To find the number halfway between 49 and 978, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 978 into our formula, we get:
(49 + 978)/2 = 513.5
Thus, the number halfway between 49 and 978 is 513.5.
To check that our answer is correct, we subtract 49 from 513.5 and subtract 513.5 from 978 and compare the two numbers:
513.5 - 49 = 464.5
978 - 513.5 = 464.5
As you can see, the halfway number is 464.5 higher than 49 and 464.5 lower than 978. Therefore, our halfway between answer of 513.5 above is correct.
Halfway Between
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