
When you ask "What number is halfway between 10 and 578?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=10 and Y=578.

To find the number halfway between 10 and 578, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 10 and 578 into our formula, we get:
(10 + 578)/2 = 294
Thus, the number halfway between 10 and 578 is 294.
To check that our answer is correct, we subtract 10 from 294 and subtract 294 from 578 and compare the two numbers:
294 - 10 = 284
578 - 294 = 284
As you can see, the halfway number is 284 higher than 10 and 284 lower than 578. Therefore, our halfway between answer of 294 above is correct.
Halfway Between
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Halfway Between 10 and 579
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