Halfway Between 100 and 280

When you ask "What number is halfway between 100 and 280?" 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=280.

Halfway Between Line

To find the number halfway between 100 and 280, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 280 into our formula, we get:

(100 + 280)/2 = 190

Thus, the number halfway between 100 and 280 is 190.

To check that our answer is correct, we subtract 100 from 190 and subtract 190 from 280 and compare the two numbers:

190 - 100 = 90
280 - 190 = 90

As you can see, the halfway number is 90 higher than 100 and 90 lower than 280. Therefore, our halfway between answer of 190 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 100 and 281
Here is our next Halfway Between calculation.