I made a 50 question review for Battle of the Books students. Duplicating the questions was possible, but it was kind of buried within the interface. There were a lot of question options, and you can let kids use "scratch pad" which would probably be helpful for math. I didn't like that it required a standard. For what I was doing, it wasn't relevant. I can see how it would be helpful for core classes, but I found it kind of an annoyance.
https://app.edulastic.com/#renderResource/close/NDAzODA2MTUwMw%3D%3D
https://app.edulastic.com/#renderResource/close/NDAzODA2MTUwMw%3D%3D