Halfway Between 9 and 15

When you ask "What number is halfway between 9 and 15?" 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=15.

Halfway Between Line

To find the number halfway between 9 and 15, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 9 and 15 into our formula, we get:

(9 + 15)/2 = 12

Thus, the number halfway between 9 and 15 is 12.

To check that our answer is correct, we subtract 9 from 12 and subtract 12 from 15 and compare the two numbers:

12 - 9 = 3
15 - 12 = 3

As you can see, the halfway number is 3 higher than 9 and 3 lower than 15. Therefore, our halfway between answer of 12 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 9 and 16
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