Halfway Between 100 and 231

When you ask "What number is halfway between 100 and 231?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=100 and Y=231.

Halfway Between Line

To find the number halfway between 100 and 231, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 231 into our formula, we get:

(100 + 231)/2 = 165.5

Thus, the number halfway between 100 and 231 is 165.5.

To check that our answer is correct, we subtract 100 from 165.5 and subtract 165.5 from 231 and compare the two numbers:

165.5 - 100 = 65.5
231 - 165.5 = 65.5

As you can see, the halfway number is 65.5 higher than 100 and 65.5 lower than 231. Therefore, our halfway between answer of 165.5 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 100 and 232
Here is our next Halfway Between calculation.