When you ask "What number is halfway between 3 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=3 and Y=122.
To find the number halfway between 3 and 122, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 3 and 122 into our formula, we get:
(3 + 122)/2 = 62.5
Thus, the number halfway between 3 and 122 is 62.5.
To check that our answer is correct, we subtract 3 from 62.5 and subtract 62.5 from 122 and compare the two numbers:
62.5 - 3 = 59.5
122 - 62.5 = 59.5
As you can see, the halfway number is 59.5 higher than 3 and 59.5 lower than 122. Therefore, our halfway between answer of 62.5 above is correct.
Halfway Between
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Halfway Between 3 and 123
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