Halfway Between 9 and 72

When you ask "What number is halfway between 9 and 72?" 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=72.

Halfway Between Line

To find the number halfway between 9 and 72, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 9 and 72 into our formula, we get:

(9 + 72)/2 = 40.5

Thus, the number halfway between 9 and 72 is 40.5.

To check that our answer is correct, we subtract 9 from 40.5 and subtract 40.5 from 72 and compare the two numbers:

40.5 - 9 = 31.5
72 - 40.5 = 31.5

As you can see, the halfway number is 31.5 higher than 9 and 31.5 lower than 72. Therefore, our halfway between answer of 40.5 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 9 and 73
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