11 - 9 =, two, three, six plus four is ten, 7+3=10, 4+6=10, 6+4=10, , fifteen, eleven, thirteen, , , , , 18, twenty, , , 11, , , Three minus one is two, Three minus one is one, Ten plus one is eleven, Ten plus one is twelve, Ten plus one is eleven, , fourteen, fifteen, sixteen, seventeen, 12 - 2 = 10, twelve plus two is ten, Twelve minus two is ten.

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