When you ask "What number is halfway between 77 and 249?" 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=249.
To find the number halfway between 77 and 249, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 249 into our formula, we get:
(77 + 249)/2 = 163
Thus, the number halfway between 77 and 249 is 163.
To check that our answer is correct, we subtract 77 from 163 and subtract 163 from 249 and compare the two numbers:
163 - 77 = 86
249 - 163 = 86
As you can see, the halfway number is 86 higher than 77 and 86 lower than 249. Therefore, our halfway between answer of 163 above is correct.
Halfway Between
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Halfway Between 77 and 250
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