1 2 5 + 1 = 1 + = + = + = + = + = 3 + 2 = 2 + 3 = 1 + 6 = 6 + 1 = 7 + 2 = 2 + 7 = 5 + 4 = 4 + 5 = 7 Tauschaufgaben Nur zu Prüfzwecken – Eigentum des Verlags öbv
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