When you ask "What number is halfway between 8 and 277?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=8 and Y=277.
To find the number halfway between 8 and 277, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 277 into our formula, we get:
(8 + 277)/2 = 142.5
Thus, the number halfway between 8 and 277 is 142.5.
To check that our answer is correct, we subtract 8 from 142.5 and subtract 142.5 from 277 and compare the two numbers:
142.5 - 8 = 134.5
277 - 142.5 = 134.5
As you can see, the halfway number is 134.5 higher than 8 and 134.5 lower than 277. Therefore, our halfway between answer of 142.5 above is correct.
Halfway Between
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Halfway Between 8 and 278
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