When you ask "What number is halfway between 11 and 239?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=11 and Y=239.
To find the number halfway between 11 and 239, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 11 and 239 into our formula, we get:
(11 + 239)/2 = 125
Thus, the number halfway between 11 and 239 is 125.
To check that our answer is correct, we subtract 11 from 125 and subtract 125 from 239 and compare the two numbers:
125 - 11 = 114
239 - 125 = 114
As you can see, the halfway number is 114 higher than 11 and 114 lower than 239. Therefore, our halfway between answer of 125 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 11 and 240
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