When you ask "What number is halfway between 30 and 138?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=30 and Y=138.
To find the number halfway between 30 and 138, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 138 into our formula, we get:
(30 + 138)/2 = 84
Thus, the number halfway between 30 and 138 is 84.
To check that our answer is correct, we subtract 30 from 84 and subtract 84 from 138 and compare the two numbers:
84 - 30 = 54
138 - 84 = 54
As you can see, the halfway number is 54 higher than 30 and 54 lower than 138. Therefore, our halfway between answer of 84 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 30 and 139
Here is our next Halfway Between calculation.
Copyright | Privacy Policy | Disclaimer | Contact