When you ask "What number is halfway between 2 and 217?" 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=217.
To find the number halfway between 2 and 217, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 2 and 217 into our formula, we get:
(2 + 217)/2 = 109.5
Thus, the number halfway between 2 and 217 is 109.5.
To check that our answer is correct, we subtract 2 from 109.5 and subtract 109.5 from 217 and compare the two numbers:
109.5 - 2 = 107.5
217 - 109.5 = 107.5
As you can see, the halfway number is 107.5 higher than 2 and 107.5 lower than 217. Therefore, our halfway between answer of 109.5 above is correct.
Halfway Between
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Halfway Between 2 and 218
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