A growing number of Mandarin Chinese packs already exists. Organizing them would simplify selecting which to learn, and reveal holes that might need filling (e.g., numbers, counting, and simple mathematical words).
For the HSK exam, Level 2.2
1-10 Most frequent mandarin chinese characters.
11-20 most frequent mandarin chinese characters.
21-30 most frequent mandarin chinese characters.
31-40 most frequent mandarin chinese characters.
41-50 most frequent mandarin chinese characters.
51-60 most frequent mandarin chinese characters.
61-70 most frequent mandarin chinese characters.
71-80 most frequent mandarin chinese characters.
81-90 most frequent mandarin chinese characters.
91-100 most frequent mandarin chinese characters.
Quisition is a browser-based flashcard system that repeats old cards and introduces new ones at optimal time intervals. You can create your own card packs or use those developed by others.