(1)Calcule as Multiplicações.simplifique.
a)[tex]\frac{3}{5} .\frac{1}{2} .\frac{2}{15} .\frac{4}{9} =[/tex]
b)[tex]\frac{8}{17} . \frac{3}{8} . \frac{17}{3} =[/tex]
c)[tex]\frac{1}{3} .\frac{9}{2} .\frac{4}{35} .\frac{7}{8}[/tex]
d)[tex]\frac{9}{10} . \frac{100}{45} .\frac{3}{9} =[/tex]
e)[tex]\frac{15}{10} .\frac{25}{5}. \frac{18}{36} =[/tex]
(2)Efetue as divisões.
a)[tex]\frac{15}{35}: \frac{1}{9}=[/tex]
b)[tex]\frac{7}{13} : \frac{8}{}[/tex]
c)[tex]\frac{6}{13} : \frac{4}{3} =[/tex]
d)[tex]\frac{13}{20} : \frac{1}{2}[/tex]
e)[tex]\frac{15}{} : \frac{2}{3} =[/tex]
f)[tex]\frac{16}{19} : \frac{8}{5} =[/tex]

(3) calcule as potencias
a)[tex](\frac{7}{15}){2} =[/tex]
b)[tex](\frac{10}{17})=[/tex]
c)[tex](\frac{5}{6}){3}[/tex]
d)[tex](\frac{4}{5}){4}=[/tex]
e)[tex](\frac{17}{100}){0} =[/tex]
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