Reciting the times table is read as basics drilled into memory, the rules learned by rote. It points to returning to fundamentals, or to an old feeling of being tested.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.