When you ask "What number is halfway between 2 and 18?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=2 and Y=18.
To find the number halfway between 2 and 18, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 2 and 18 into our formula, we get:
(2 + 18)/2 = 10
Thus, the number halfway between 2 and 18 is 10.
To check that our answer is correct, we subtract 2 from 10 and subtract 10 from 18 and compare the two numbers:
10 - 2 = 8
18 - 10 = 8
As you can see, the halfway number is 8 higher than 2 and 8 lower than 18. Therefore, our halfway between answer of 10 above is correct.
Halfway Between
Find halfway between two other numbers here!
Halfway Between 2 and 19
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