When you ask "What number is halfway between 77 and 260?" 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=260.
To find the number halfway between 77 and 260, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 260 into our formula, we get:
(77 + 260)/2 = 168.5
Thus, the number halfway between 77 and 260 is 168.5.
To check that our answer is correct, we subtract 77 from 168.5 and subtract 168.5 from 260 and compare the two numbers:
168.5 - 77 = 91.5
260 - 168.5 = 91.5
As you can see, the halfway number is 91.5 higher than 77 and 91.5 lower than 260. Therefore, our halfway between answer of 168.5 above is correct.
Halfway Between
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Halfway Between 77 and 261
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