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

Сабирање и одузимање до 20 (9)

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