When you ask "What number is halfway between 20 and 465?" 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=465.
To find the number halfway between 20 and 465, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 20 and 465 into our formula, we get:
(20 + 465)/2 = 242.5
Thus, the number halfway between 20 and 465 is 242.5.
To check that our answer is correct, we subtract 20 from 242.5 and subtract 242.5 from 465 and compare the two numbers:
242.5 - 20 = 222.5
465 - 242.5 = 222.5
As you can see, the halfway number is 222.5 higher than 20 and 222.5 lower than 465. Therefore, our halfway between answer of 242.5 above is correct.
Halfway Between
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Halfway Between 20 and 466
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