When you ask "What number is halfway between 77 and 274?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=77 and Y=274.
To find the number halfway between 77 and 274, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 274 into our formula, we get:
(77 + 274)/2 = 175.5
Thus, the number halfway between 77 and 274 is 175.5.
To check that our answer is correct, we subtract 77 from 175.5 and subtract 175.5 from 274 and compare the two numbers:
175.5 - 77 = 98.5
274 - 175.5 = 98.5
As you can see, the halfway number is 98.5 higher than 77 and 98.5 lower than 274. Therefore, our halfway between answer of 175.5 above is correct.
Halfway Between
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Halfway Between 77 and 275
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