2 + 9 - 11, 3 + 8 - 11, 3 + 9 - 12, 4 + 7 - 11, 4 + 8 - 12, 4 + 9 - 13, 5 + 6 - 11, 5 + 7 - 12, 5 + 8 - 13, 5 + 9 - 14, 6 + 5 - 11, 6 + 6 - 12, 6 + 7 - 13, 6 + 8 - 14, 6 + 9 - 15, 7 + 4 - 11, 7 + 5 - 12, 7 + 6 - 13, 7 + 7 - 14, 7 + 8 - 15, 7 + 9 - 16, 8 + 3 - 11, 8 + 4 - 12, 8 + 5 - 13, 8 + 6 - 14, 8 + 7 - 15, 8 + 8 - 16, 8 + 9 - 17, 9 + 2 - 11, 9 + 3 - 12, 9 + 4 - 13, 9 + 5 - 14, 9 + 6 - 15, 9 + 7 - 16, 9 + 8 - 17, 9 + 9 - 18,

Addition - single digits sum to 11-19

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