When you ask "What number is halfway between 1 and 222?" 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=222.
To find the number halfway between 1 and 222, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 222 into our formula, we get:
(1 + 222)/2 = 111.5
Thus, the number halfway between 1 and 222 is 111.5.
To check that our answer is correct, we subtract 1 from 111.5 and subtract 111.5 from 222 and compare the two numbers:
111.5 - 1 = 110.5
222 - 111.5 = 110.5
As you can see, the halfway number is 110.5 higher than 1 and 110.5 lower than 222. Therefore, our halfway between answer of 111.5 above is correct.
Halfway Between
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Halfway Between 1 and 223
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