Report - CÁLCULO MENTALaulasptmariareinaeskola.es/app/download/9101909/4Fichas+de+Cálculo... · cÁlculo mental 1.- 7 + 5 - 4 + 6 - 5 + 3 - 8 + 7 - 5 + 9 = 2.- 9 + 7 - 5 - 7 + 9 + 5 - 7

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