
When you ask "What number is halfway between 13 and 913?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=13 and Y=913.

To find the number halfway between 13 and 913, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 13 and 913 into our formula, we get:
(13 + 913)/2 = 463
Thus, the number halfway between 13 and 913 is 463.
To check that our answer is correct, we subtract 13 from 463 and subtract 463 from 913 and compare the two numbers:
463 - 13 = 450
913 - 463 = 450
As you can see, the halfway number is 450 higher than 13 and 450 lower than 913. Therefore, our halfway between answer of 463 above is correct.
Halfway Between
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Halfway Between 13 and 914
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