Halfway Between 78 and 640

When you ask "What number is halfway between 78 and 640?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=78 and Y=640.

Halfway Between Line

To find the number halfway between 78 and 640, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 78 and 640 into our formula, we get:

(78 + 640)/2 = 359

Thus, the number halfway between 78 and 640 is 359.

To check that our answer is correct, we subtract 78 from 359 and subtract 359 from 640 and compare the two numbers:

359 - 78 = 281
640 - 359 = 281

As you can see, the halfway number is 281 higher than 78 and 281 lower than 640. Therefore, our halfway between answer of 359 above is correct.

Halfway Between
Find halfway between two other numbers here!

Halfway Between 78 and 641
Here is our next Halfway Between calculation.