10, 10 + 10 = 20, 10 + 10 + 10 = 30, 10 + 10 + 10 + 10 = 40, 10 + 10 + 10 + 10 + 10 = 50, 10 + 10 + 10 + 10 + 10 + 10 = 60, 10 + 10 + 10 + 10 + 10 + 10 + 10 = 70,

CE1 - APC - Numération - Activité 1

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