When you ask "What number is halfway between 1 and 122?" 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=122.
To find the number halfway between 1 and 122, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 122 into our formula, we get:
(1 + 122)/2 = 61.5
Thus, the number halfway between 1 and 122 is 61.5.
To check that our answer is correct, we subtract 1 from 61.5 and subtract 61.5 from 122 and compare the two numbers:
61.5 - 1 = 60.5
122 - 61.5 = 60.5
As you can see, the halfway number is 60.5 higher than 1 and 60.5 lower than 122. Therefore, our halfway between answer of 61.5 above is correct.
Halfway Between
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Halfway Between 1 and 123
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