Halfway Between 9 and 123

When you ask "What number is halfway between 9 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=9 and Y=123.

Halfway Between Line

To find the number halfway between 9 and 123, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 9 and 123 into our formula, we get:

(9 + 123)/2 = 66

Thus, the number halfway between 9 and 123 is 66.

To check that our answer is correct, we subtract 9 from 66 and subtract 66 from 123 and compare the two numbers:

66 - 9 = 57
123 - 66 = 57

As you can see, the halfway number is 57 higher than 9 and 57 lower than 123. Therefore, our halfway between answer of 66 above is correct.

Halfway Between
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Halfway Between 9 and 124
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