Halfway Between 66 and 85

When you ask "What number is halfway between 66 and 85?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=66 and Y=85.

Halfway Between Line

To find the number halfway between 66 and 85, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 66 and 85 into our formula, we get:

(66 + 85)/2 = 75.5

Thus, the number halfway between 66 and 85 is 75.5.

To check that our answer is correct, we subtract 66 from 75.5 and subtract 75.5 from 85 and compare the two numbers:

75.5 - 66 = 9.5
85 - 75.5 = 9.5

As you can see, the halfway number is 9.5 higher than 66 and 9.5 lower than 85. Therefore, our halfway between answer of 75.5 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 66 and 86
Here is our next Halfway Between calculation.