I'm trying to internalize numbers by forcing myself to think of them numerically rather than associating them with their English translations. So I thought it might be a good idea to learn my times table in Mandarin using Anki flashcards.
Is the following a valid way to ask an arithmetic question that expects a number as an answer?
I've tried to search for an answer online, but I can only find examples of arithmetic statements and equations, not questions. Is it ok to take an equation and change the right hand side to 什么 as I've done above, or is there a more idiomatic way?