
When you ask "What number is halfway between 2 and 158?" 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=158.

To find the number halfway between 2 and 158, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 2 and 158 into our formula, we get:
(2 + 158)/2 = 80
Thus, the number halfway between 2 and 158 is 80.
To check that our answer is correct, we subtract 2 from 80 and subtract 80 from 158 and compare the two numbers:
80 - 2 = 78
158 - 80 = 78
As you can see, the halfway number is 78 higher than 2 and 78 lower than 158. Therefore, our halfway between answer of 80 above is correct.
Halfway Between
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Halfway Between 2 and 159
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