When you ask "What number is halfway between 2 and 85?" 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=85.
To find the number halfway between 2 and 85, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 2 and 85 into our formula, we get:
(2 + 85)/2 = 43.5
Thus, the number halfway between 2 and 85 is 43.5.
To check that our answer is correct, we subtract 2 from 43.5 and subtract 43.5 from 85 and compare the two numbers:
43.5 - 2 = 41.5
85 - 43.5 = 41.5
As you can see, the halfway number is 41.5 higher than 2 and 41.5 lower than 85. Therefore, our halfway between answer of 43.5 above is correct.
Halfway Between
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Halfway Between 2 and 86
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