4 - 1 =, two, three, five, six, 3 - 2 =, one, eight, ten, twelve, 7 - 1 =, 5, 6, 8, 10, 17 - 0 =, 12, 15, 16, 17, 14 - 10 =, four, five, six, nine, 19 - 7 =, 11, 12, 13, 14, 9 - 0 =, 8, 9, 10, 13, 6 - 3 =, 2, 3, 4, 15, 7 - 5 =, two, five, eight, twelve, 11 - 2 =, 8, 9, 10, 13, 11 + 4 =, 4, 7, 15, 13, 20 - 8 =, 12, 15, 16, 20, 13 - 0 =, 3, 4, 6, 13, 19 - 1 =, 11, 14, 18, 20, 2 - 0 =, 2, 5, 6, 10.

Subtraction throwdown

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