
When you ask "What number is halfway between 77 and 475?" 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=475.

To find the number halfway between 77 and 475, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 475 into our formula, we get:
(77 + 475)/2 = 276
Thus, the number halfway between 77 and 475 is 276.
To check that our answer is correct, we subtract 77 from 276 and subtract 276 from 475 and compare the two numbers:
276 - 77 = 199
475 - 276 = 199
As you can see, the halfway number is 199 higher than 77 and 199 lower than 475. Therefore, our halfway between answer of 276 above is correct.
Halfway Between
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Halfway Between 77 and 476
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