When you ask "What number is halfway between 2 and 87?" 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=87.
To find the number halfway between 2 and 87, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 2 and 87 into our formula, we get:
(2 + 87)/2 = 44.5
Thus, the number halfway between 2 and 87 is 44.5.
To check that our answer is correct, we subtract 2 from 44.5 and subtract 44.5 from 87 and compare the two numbers:
44.5 - 2 = 42.5
87 - 44.5 = 42.5
As you can see, the halfway number is 42.5 higher than 2 and 42.5 lower than 87. Therefore, our halfway between answer of 44.5 above is correct.
Halfway Between
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Halfway Between 2 and 88
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