Should be relatively easy to create..
C2 can do math itself so you shouldn't even have that hard a time..
Easiest way would be to create a function to produce the "random" question..
Just a quick and dirty way of doing things, albeit not the best:
You could use global variables for the first, second, RightAnswer, WrongAnswer, RightOrWrong..
set global variable first to choose(1,2,3,4,5,6,7,8,9) (I prefer using choose instead of random, for I find it easier to manipulate)
set global variable second to choose(1,2,3,4,5,6,7,8,9)
set global variable RightAnswer to first+second
set global variable WrongAnswer to first+second+choose(-1,1)
set Global variable RightOrWrong to choose("Right","Wrong")
system compare global variable RightOrWrong = "Right"
set text to first&"+"&second&"="&RightAnswer
system compare global variable RightOrWrong = "Wrong"
set text to first&"+"&second&"="&WrongAnswer
Or something like that..