2, 1+1 =, 9, 7+2 =, 7, 4+3 =, 14, 10+4 =, 13, 6+7 =, 5, 6+ _ = 11, 4, 3+ _ = 7, 16, 10+6 =, 6, 5+1 =, 20, 10 + 10 =, 18, 10+ 8 =, 1, 0+1 =, 8, 4 + 4 = , 10, 5+5 =, 0, 10+ _ = 10.

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