Halfway Between 9 and 89

When you ask "What number is halfway between 9 and 89?" 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=89.

Halfway Between Line

To find the number halfway between 9 and 89, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 9 and 89 into our formula, we get:

(9 + 89)/2 = 49

Thus, the number halfway between 9 and 89 is 49.

To check that our answer is correct, we subtract 9 from 49 and subtract 49 from 89 and compare the two numbers:

49 - 9 = 40
89 - 49 = 40

As you can see, the halfway number is 40 higher than 9 and 40 lower than 89. Therefore, our halfway between answer of 49 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 9 and 90
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