Ответ:

  1. \(\frac{4}{9}=0,(4)\);
  2. \(\frac{8}{15}=0,5(3)\);
  3. \(\frac{29}{80}=0,3625\);
  4. \(\frac{11}{18}=0,6(1)\);
  5. \(6\frac{9}{20}=6,45\);
  6. \(3\frac{7}{12}=3,58(3)\).