When you ask "What number is halfway between 77 and 338?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=77 and Y=338.
To find the number halfway between 77 and 338, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 338 into our formula, we get:
(77 + 338)/2 = 207.5
Thus, the number halfway between 77 and 338 is 207.5.
To check that our answer is correct, we subtract 77 from 207.5 and subtract 207.5 from 338 and compare the two numbers:
207.5 - 77 = 130.5
338 - 207.5 = 130.5
As you can see, the halfway number is 130.5 higher than 77 and 130.5 lower than 338. Therefore, our halfway between answer of 207.5 above is correct.
Halfway Between
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Halfway Between 77 and 339
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