
When you ask "What number is halfway between 1 and 99?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=1 and Y=99.

To find the number halfway between 1 and 99, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 99 into our formula, we get:
(1 + 99)/2 = 50
Thus, the number halfway between 1 and 99 is 50.
To check that our answer is correct, we subtract 1 from 50 and subtract 50 from 99 and compare the two numbers:
50 - 1 = 49
99 - 50 = 49
As you can see, the halfway number is 49 higher than 1 and 49 lower than 99. Therefore, our halfway between answer of 50 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 1 and 100
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