When you ask "What number is halfway between 30 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=30 and Y=112.
To find the number halfway between 30 and 112, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 112 into our formula, we get:
(30 + 112)/2 = 71
Thus, the number halfway between 30 and 112 is 71.
To check that our answer is correct, we subtract 30 from 71 and subtract 71 from 112 and compare the two numbers:
71 - 30 = 41
112 - 71 = 41
As you can see, the halfway number is 41 higher than 30 and 41 lower than 112. Therefore, our halfway between answer of 71 above is correct.
Halfway Between
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Halfway Between 30 and 113
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