hey, I have been asked to build a random math problem generator with many specifics. I'm having problems figuring out where to even start, if someone asked you advanced AS users out there to do this where would you begin. you would be able to choose from addition problems and subtraction, division and so on. They will be sifted by grade(1-5) the lower grades would have more parameters than the higher ones. for example : add two single digit numbers the sum of which can't exceed 9 (3+4=7). it gets tough when you get to problems like : add two digit numbers with regrouping in the ones and tens place (78+32=110). there are lots of little parameters like that through the grades and through each array of subjects. thanks! marco.