10 + 6 = - 16, 14 + 5 = - 19, 11 + 7 = - 18, 13 + 4 = - 17, 21 + 7 =   - 28, 23 + 5 = - 28, 15 + 3 = - 18, 24 + 5 = - 29, 26 + 2 - 28, 22 + 7 = - 29, 16 + 3 = - 19, 12 + 10 = - 22, 13 + 13 = - 26, 11 + 11 = - 22, 14 + 14 = - 28, 12 + 12 = - 24,

Adunarea numerelor naturale 0-31

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