Halfway Between 15 and 87

When you ask "What number is halfway between 15 and 87?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=15 and Y=87.

Halfway Between Line

To find the number halfway between 15 and 87, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 15 and 87 into our formula, we get:

(15 + 87)/2 = 51

Thus, the number halfway between 15 and 87 is 51.

To check that our answer is correct, we subtract 15 from 51 and subtract 51 from 87 and compare the two numbers:

51 - 15 = 36
87 - 51 = 36

As you can see, the halfway number is 36 higher than 15 and 36 lower than 87. Therefore, our halfway between answer of 51 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 15 and 88
Here is our next Halfway Between calculation.