Halfway Between 77 and 100




When you ask "What number is halfway between 77 and 100?" 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=100.



To find the number halfway between 77 and 100, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 77 and 100 into our formula, we get:

(77 + 100)/2 = 88.5

Thus, the number halfway between 77 and 100 is 88.5.


To check that our answer is correct, we subtract 77 from 88.5 and subtract 88.5 from 100 and compare the two numbers:

88.5 - 77 = 11.5
100 - 88.5 = 11.5

As you can see, the halfway number is 11.5 higher than 77 and 11.5 lower than 100. Therefore, our halfway between answer of 88.5 above is correct.

Halfway Between
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Halfway Between 77 and 101
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