Exercícios com autocorreção

ESTRATÉGIAS PARA A ADIÇÃO (1.º ano) / Adicionar 22, 23, 34, 41 (...)

   Anterior     Estratégia "Somar 9, 19, 29) 

 

Clica F11. Estratégia: 56+34= 56+30+4 (soma as dezenas e, depois, as unidades).

35  +  24  =  59

 

                                   +20                                                       + 4       = 59

35                                                            55                        59  

 


47 + 22 =

                                               +                                               +                              

                                                                                         

 


53 + 24 =

                                               +                                               +                              

                                                                                  

 


48 + 33 =

                                               +                                               +                              

                                                                                  

 


55 + 45 =

                                               +                                               +                              

                                                                                  

 


AUTOR: Prof. Vaz Nunes - Ovar/Portugal. © Direitos reservados para os autores.

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