When you ask "What number is halfway between 2 and 215?" 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=215.
To find the number halfway between 2 and 215, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 2 and 215 into our formula, we get:
(2 + 215)/2 = 108.5
Thus, the number halfway between 2 and 215 is 108.5.
To check that our answer is correct, we subtract 2 from 108.5 and subtract 108.5 from 215 and compare the two numbers:
108.5 - 2 = 106.5
215 - 108.5 = 106.5
As you can see, the halfway number is 106.5 higher than 2 and 106.5 lower than 215. Therefore, our halfway between answer of 108.5 above is correct.
Halfway Between
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Halfway Between 2 and 216
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