When you ask "What number is halfway between 18 and 195?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=18 and Y=195.
To find the number halfway between 18 and 195, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 195 into our formula, we get:
(18 + 195)/2 = 106.5
Thus, the number halfway between 18 and 195 is 106.5.
To check that our answer is correct, we subtract 18 from 106.5 and subtract 106.5 from 195 and compare the two numbers:
106.5 - 18 = 88.5
195 - 106.5 = 88.5
As you can see, the halfway number is 88.5 higher than 18 and 88.5 lower than 195. Therefore, our halfway between answer of 106.5 above is correct.
Halfway Between
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