When you ask "What number is halfway between 77 and 112?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=77 and Y=112.
To find the number halfway between 77 and 112, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 112 into our formula, we get:
(77 + 112)/2 = 94.5
Thus, the number halfway between 77 and 112 is 94.5.
To check that our answer is correct, we subtract 77 from 94.5 and subtract 94.5 from 112 and compare the two numbers:
94.5 - 77 = 17.5
112 - 94.5 = 17.5
As you can see, the halfway number is 17.5 higher than 77 and 17.5 lower than 112. Therefore, our halfway between answer of 94.5 above is correct.
Halfway Between
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Halfway Between 77 and 113
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