When you ask "What number is halfway between 80 and 177?" 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=177.
To find the number halfway between 80 and 177, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 80 and 177 into our formula, we get:
(80 + 177)/2 = 128.5
Thus, the number halfway between 80 and 177 is 128.5.
To check that our answer is correct, we subtract 80 from 128.5 and subtract 128.5 from 177 and compare the two numbers:
128.5 - 80 = 48.5
177 - 128.5 = 48.5
As you can see, the halfway number is 48.5 higher than 80 and 48.5 lower than 177. Therefore, our halfway between answer of 128.5 above is correct.
Halfway Between
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Halfway Between 80 and 178
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