When you ask "What number is halfway between 4 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=4 and Y=122.
To find the number halfway between 4 and 122, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 4 and 122 into our formula, we get:
(4 + 122)/2 = 63
Thus, the number halfway between 4 and 122 is 63.
To check that our answer is correct, we subtract 4 from 63 and subtract 63 from 122 and compare the two numbers:
63 - 4 = 59
122 - 63 = 59
As you can see, the halfway number is 59 higher than 4 and 59 lower than 122. Therefore, our halfway between answer of 63 above is correct.
Halfway Between
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Halfway Between 4 and 123
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