When you ask "What number is halfway between 25 and 200?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=25 and Y=200.
To find the number halfway between 25 and 200, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 25 and 200 into our formula, we get:
(25 + 200)/2 = 112.5
Thus, the number halfway between 25 and 200 is 112.5.
To check that our answer is correct, we subtract 25 from 112.5 and subtract 112.5 from 200 and compare the two numbers:
112.5 - 25 = 87.5
200 - 112.5 = 87.5
As you can see, the halfway number is 87.5 higher than 25 and 87.5 lower than 200. Therefore, our halfway between answer of 112.5 above is correct.
Halfway Between
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Halfway Between 25 and 201
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