When you ask "What number is halfway between 48 and 511?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=48 and Y=511.
To find the number halfway between 48 and 511, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 48 and 511 into our formula, we get:
(48 + 511)/2 = 279.5
Thus, the number halfway between 48 and 511 is 279.5.
To check that our answer is correct, we subtract 48 from 279.5 and subtract 279.5 from 511 and compare the two numbers:
279.5 - 48 = 231.5
511 - 279.5 = 231.5
As you can see, the halfway number is 231.5 higher than 48 and 231.5 lower than 511. Therefore, our halfway between answer of 279.5 above is correct.
Halfway Between
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Halfway Between 48 and 512
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