When you ask "What number is halfway between 2 and 77?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=2 and Y=77.
To find the number halfway between 2 and 77, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 2 and 77 into our formula, we get:
(2 + 77)/2 = 39.5
Thus, the number halfway between 2 and 77 is 39.5.
To check that our answer is correct, we subtract 2 from 39.5 and subtract 39.5 from 77 and compare the two numbers:
39.5 - 2 = 37.5
77 - 39.5 = 37.5
As you can see, the halfway number is 37.5 higher than 2 and 37.5 lower than 77. Therefore, our halfway between answer of 39.5 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 2 and 78
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