In this project, I have created a simple math game. Feel free to remix and try things like adding more questions, adding background music or a backdrop, adding an opening sequence, adding a win message...
You can check out my other program called "Addition Test" to see another approach to using arithmetic operator blocks in your program. You can check out my video tutorial for Conditional Statements or My Blocks on the official Scratch YouTube channel (look for the Conditional Statements or My Blocks video series) and find a link to written resources related to this topic in the video description.