i am making a maths app for kids as part of an assignment aged 3-8 and I have done everything including making a random question generate however my division and subtraction questions aren't aloud to produce negative awnsers how do I stop that?
Use the absolute block
I would cheat by working backwards from legal answers to generate the questions.
I tried to do that where i created a list of questions it could ask however it didn't work, is that what you mean't. To be honest it's my first time using MIT App Inventor I probably did it wrong 
(Canned Reply: ABG- Export & Upload .aia)
Export your .aia file and upload it here.
(Canned Reply: ABG - Download those blocks and post them here)
Please download and post each of those event block(s)/procedures here ...
P.S. These blocks can be dragged directly into your Blocks Editor workspace.
See Download Block Images for a demo.