When you ask "What number is halfway between 20 and 443?" 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=443.
To find the number halfway between 20 and 443, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 20 and 443 into our formula, we get:
(20 + 443)/2 = 231.5
Thus, the number halfway between 20 and 443 is 231.5.
To check that our answer is correct, we subtract 20 from 231.5 and subtract 231.5 from 443 and compare the two numbers:
231.5 - 20 = 211.5
443 - 231.5 = 211.5
As you can see, the halfway number is 211.5 higher than 20 and 211.5 lower than 443. Therefore, our halfway between answer of 231.5 above is correct.
Halfway Between
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Halfway Between 20 and 444
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