20 + 30 = - 50, 50 - 20 = - 30, 60 + 10 = - 70, 70 - 60 = - 10, 20 - 20 = - 0, 20 + 0 = - 20, 40 + 40 = - 80, 80 - 40 = - 40, 30 + 60 = - 90, 90 - 30 = - 60,

Add and Subtract Tens

Tabela

Vizuelni stil

Postavke

Promeni šablon

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