REPASO MATE TEMA 2
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Resuelve aplicando la propiedad distributiva: 12 × (4 + 9)
12 × (4 + 9) = 12 x 4 + 12 x 9
Resuelve la operación combinada: 42 + (4 + 15) × (8 + 3)
225
Completa con las dos operaciones inversas: 3845 + 1762 = 5607
5607 - 1762 = 3845 y 5607 - 3845 = 1762
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