
When you ask "What number is halfway between 15 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=15 and Y=475.

To find the number halfway between 15 and 475, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 15 and 475 into our formula, we get:
(15 + 475)/2 = 245
Thus, the number halfway between 15 and 475 is 245.
To check that our answer is correct, we subtract 15 from 245 and subtract 245 from 475 and compare the two numbers:
245 - 15 = 230
475 - 245 = 230
As you can see, the halfway number is 230 higher than 15 and 230 lower than 475. Therefore, our halfway between answer of 245 above is correct.
Halfway Between
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Halfway Between 15 and 476
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