
When you ask "What number is halfway between 20 and 460?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=20 and Y=460.

To find the number halfway between 20 and 460, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 20 and 460 into our formula, we get:
(20 + 460)/2 = 240
Thus, the number halfway between 20 and 460 is 240.
To check that our answer is correct, we subtract 20 from 240 and subtract 240 from 460 and compare the two numbers:
240 - 20 = 220
460 - 240 = 220
As you can see, the halfway number is 220 higher than 20 and 220 lower than 460. Therefore, our halfway between answer of 240 above is correct.
Halfway Between
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Halfway Between 20 and 461
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