Revisiting Multiplication Tables

Multiplication tables 1-12 are the foundation. Key: 6×7=42, 7×8=56, 8×9=72, 9×9=81 (commonly confused). Method to learn: sing tables, use visual arrays, practice daily. "Nines trick": 9×6 — hold up fingers, fold the 6th finger, count 5 to the left and 4 to the right = 54. 9×any digit: first digit = (digit-1), second digit = (10-digit). Example: 9×7: first=6, second=3 → 63.