I'm currently in a Korean class, and I'm aiming to learn all the vocabulary and phrases before the lesson. Next week we'll be learning the numbers 1 to 10 amongst other things. I've tended to be weak at numbers when learning other languages, so I want to study effectively. Also, Fluent Forever mentions that learning lots of overly similar words at once can cause confusion.
So far, I've created Anki cards for the numbers. The pictures are distinct, such as a map of China and Taiwan for 1, the seven dwarves for 7, and flags of the G8, and avoided having character-based representations of the numbers, and when memorising, I try to remember the picture rather than the number. I've limited the number of notes coming into play at once, by temporarily suspending the even numbered cards. In hindsight, I might have allocated two weeks rather than one to learn them.
What else should I do to learn a lot of similar words in a short period of time?