When you ask "What number is halfway between 1 and 123?" 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=123.
To find the number halfway between 1 and 123, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 123 into our formula, we get:
(1 + 123)/2 = 62
Thus, the number halfway between 1 and 123 is 62.
To check that our answer is correct, we subtract 1 from 62 and subtract 62 from 123 and compare the two numbers:
62 - 1 = 61
123 - 62 = 61
As you can see, the halfway number is 61 higher than 1 and 61 lower than 123. Therefore, our halfway between answer of 62 above is correct.
Halfway Between
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Halfway Between 1 and 124
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