
When you ask "What number is halfway between 1 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=1 and Y=87.

To find the number halfway between 1 and 87, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 87 into our formula, we get:
(1 + 87)/2 = 44
Thus, the number halfway between 1 and 87 is 44.
To check that our answer is correct, we subtract 1 from 44 and subtract 44 from 87 and compare the two numbers:
44 - 1 = 43
87 - 44 = 43
As you can see, the halfway number is 43 higher than 1 and 43 lower than 87. Therefore, our halfway between answer of 44 above is correct.
Halfway Between
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Halfway Between 1 and 88
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