When you ask "What number is halfway between 2 and 220?" 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=220.
To find the number halfway between 2 and 220, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 2 and 220 into our formula, we get:
(2 + 220)/2 = 111
Thus, the number halfway between 2 and 220 is 111.
To check that our answer is correct, we subtract 2 from 111 and subtract 111 from 220 and compare the two numbers:
111 - 2 = 109
220 - 111 = 109
As you can see, the halfway number is 109 higher than 2 and 109 lower than 220. Therefore, our halfway between answer of 111 above is correct.
Halfway Between
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Halfway Between 2 and 221
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