When you ask "What number is halfway between 80 and 889?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=80 and Y=889.
To find the number halfway between 80 and 889, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 80 and 889 into our formula, we get:
(80 + 889)/2 = 484.5
Thus, the number halfway between 80 and 889 is 484.5.
To check that our answer is correct, we subtract 80 from 484.5 and subtract 484.5 from 889 and compare the two numbers:
484.5 - 80 = 404.5
889 - 484.5 = 404.5
As you can see, the halfway number is 404.5 higher than 80 and 404.5 lower than 889. Therefore, our halfway between answer of 484.5 above is correct.
Halfway Between
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Halfway Between 80 and 890
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