When you ask "What number is halfway between 78 and 221?" 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=221.
To find the number halfway between 78 and 221, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 78 and 221 into our formula, we get:
(78 + 221)/2 = 149.5
Thus, the number halfway between 78 and 221 is 149.5.
To check that our answer is correct, we subtract 78 from 149.5 and subtract 149.5 from 221 and compare the two numbers:
149.5 - 78 = 71.5
221 - 149.5 = 71.5
As you can see, the halfway number is 71.5 higher than 78 and 71.5 lower than 221. Therefore, our halfway between answer of 149.5 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 78 and 222
Here is our next Halfway Between calculation.
Copyright | Privacy Policy | Disclaimer | Contact