Determine a fração geratriz das dízimas periódicas.


a) 0,6666....

b) 0,7777....

c) 1,55555....

d) 2,44444.....

e) 3,0303030303.....


Efetue as operações indicadas.

a) 0,222....+ 0,555... - 0,777.... = ?

b) 0,888...... : 5,666..... = ?


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