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SKM Levels: Level 1: 3 + 3 Level 2: 17 + 8 Level 3: 11 - 2 Level 4: 22 - 13 Level 5: 123 + 321 Level 6: 1234 + 4321 Level 7: 222 - 124 Level 8: 2 × 2 Level 9: 21 × 2 Level 10: 32 × 12 Level 11: 321 × 22 Level 12: 21 ÷ 2 Level 13: 321 ÷ 22 Level 14: 4321 ÷ 23 |
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