When you ask "What number is halfway between 25 and 438?" 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=438.
To find the number halfway between 25 and 438, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 25 and 438 into our formula, we get:
(25 + 438)/2 = 231.5
Thus, the number halfway between 25 and 438 is 231.5.
To check that our answer is correct, we subtract 25 from 231.5 and subtract 231.5 from 438 and compare the two numbers:
231.5 - 25 = 206.5
438 - 231.5 = 206.5
As you can see, the halfway number is 206.5 higher than 25 and 206.5 lower than 438. Therefore, our halfway between answer of 231.5 above is correct.
Halfway Between
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Halfway Between 25 and 439
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