When you ask "What number is halfway between 84 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=84 and Y=277.
To find the number halfway between 84 and 277, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 84 and 277 into our formula, we get:
(84 + 277)/2 = 180.5
Thus, the number halfway between 84 and 277 is 180.5.
To check that our answer is correct, we subtract 84 from 180.5 and subtract 180.5 from 277 and compare the two numbers:
180.5 - 84 = 96.5
277 - 180.5 = 96.5
As you can see, the halfway number is 96.5 higher than 84 and 96.5 lower than 277. Therefore, our halfway between answer of 180.5 above is correct.
Halfway Between
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Halfway Between 84 and 278
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