domingo, 5 de agosto de 2012




                                        Fixação as frações:

1) Dê a classe de equivalência das frações:

a) 2 =                                                            b)  2 =
    3                                                                    4

c) 4 =                                                            d) 8 =
    6                                                                   12

e) 1 =                                                             f) 1
    3                                                                    2

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3) Calcule:
a)   4  de  160 = ___________          b)  3  de 1024= ________
      5                                                      8

d)  1  de  364 = ___________         e )  2  de  1218 = ________
     7                                                      6
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4) Efetue,achando o M.M.C. pelo processo de decomposição em fatores primos:

a)  3 + 2 =                                                     b)  6 + 2 =
     2    4                                                              5    3

c)  5 + 1 =                                                    d)   8 + 1 =
     8     2                                                             3    4

e) 6 1 =                                                     f )   4 1 =
    7    3                                                               3    6

g)  10 3 =                                                  h)  74 =
      6     8                                                           4    9