Halfway Between 100 and 780

When you ask "What number is halfway between 100 and 780?" 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=780.

Halfway Between Line

To find the number halfway between 100 and 780, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 100 and 780 into our formula, we get:

(100 + 780)/2 = 440

Thus, the number halfway between 100 and 780 is 440.

To check that our answer is correct, we subtract 100 from 440 and subtract 440 from 780 and compare the two numbers:

440 - 100 = 340
780 - 440 = 340

As you can see, the halfway number is 340 higher than 100 and 340 lower than 780. Therefore, our halfway between answer of 440 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 100 and 781
Here is our next Halfway Between calculation.