When you ask "What number is halfway between 22 and 809?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=22 and Y=809.
To find the number halfway between 22 and 809, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 22 and 809 into our formula, we get:
(22 + 809)/2 = 415.5
Thus, the number halfway between 22 and 809 is 415.5.
To check that our answer is correct, we subtract 22 from 415.5 and subtract 415.5 from 809 and compare the two numbers:
415.5 - 22 = 393.5
809 - 415.5 = 393.5
As you can see, the halfway number is 393.5 higher than 22 and 393.5 lower than 809. Therefore, our halfway between answer of 415.5 above is correct.
Halfway Between
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Halfway Between 22 and 810
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