Halfway Between 9 and 11

When you ask "What number is halfway between 9 and 11?" 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=11.

Halfway Between Line

To find the number halfway between 9 and 11, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 9 and 11 into our formula, we get:

(9 + 11)/2 = 10

Thus, the number halfway between 9 and 11 is 10.

To check that our answer is correct, we subtract 9 from 10 and subtract 10 from 11 and compare the two numbers:

10 - 9 = 1
11 - 10 = 1

As you can see, the halfway number is 1 higher than 9 and 1 lower than 11. Therefore, our halfway between answer of 10 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 9 and 12
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