When you ask "What number is halfway between 75 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=75 and Y=438.
To find the number halfway between 75 and 438, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 75 and 438 into our formula, we get:
(75 + 438)/2 = 256.5
Thus, the number halfway between 75 and 438 is 256.5.
To check that our answer is correct, we subtract 75 from 256.5 and subtract 256.5 from 438 and compare the two numbers:
256.5 - 75 = 181.5
438 - 256.5 = 181.5
As you can see, the halfway number is 181.5 higher than 75 and 181.5 lower than 438. Therefore, our halfway between answer of 256.5 above is correct.
Halfway Between
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Halfway Between 75 and 439
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