5.25 Запишите в виде десятичной дроби: a) $$5\frac{3}{10}$$, $$7\frac{4}{10}$$, $$13\frac{8}{100}$$, $$8\frac{21}{100}$$, $$9\frac{1}{100}$$, $$100\frac{1}{100}$$, $$303\frac{303}{1000}$$, $$12\frac{25}{1000}$$; б) $$324\frac{7}{1000}$$, $$9\frac{19}{10000}$$, $$21\frac{407}{100000}$$, $$320\frac{1}{10000}$$, $$\frac{8}{10}$$, $$\frac{9}{100}$$, $$\frac{1}{100000}$$

a) Чтобы записать смешанную дробь в виде десятичной, нужно целую часть записать перед запятой, а дробную часть после запятой. $$5\frac{3}{10} = 5 + \frac{3}{10} = 5 + 0.3 = 5.3$$ $$7\frac{4}{10} = 7 + \frac{4}{10} = 7 + 0.4 = 7.4$$ $$13\frac{8}{100} = 13 + \frac{8}{100} = 13 + 0.08 = 13.08$$ $$8\frac{21}{100} = 8 + \frac{21}{100} = 8 + 0.21 = 8.21$$ $$9\frac{1}{100} = 9 + \frac{1}{100} = 9 + 0.01 = 9.01$$ $$100\frac{1}{100} = 100 + \frac{1}{100} = 100 + 0.01 = 100.01$$ $$303\frac{303}{1000} = 303 + \frac{303}{1000} = 303 + 0.303 = 303.303$$ $$12\frac{25}{1000} = 12 + \frac{25}{1000} = 12 + 0.025 = 12.025$$ б) $$324\frac{7}{1000} = 324 + \frac{7}{1000} = 324 + 0.007 = 324.007$$ $$9\frac{19}{10000} = 9 + \frac{19}{10000} = 9 + 0.0019 = 9.0019$$ $$21\frac{407}{100000} = 21 + \frac{407}{100000} = 21 + 0.00407 = 21.00407$$ $$320\frac{1}{10000} = 320 + \frac{1}{10000} = 320 + 0.0001 = 320.0001$$ $$\frac{8}{10} = 0.8$$ $$\frac{9}{100} = 0.09$$ $$\frac{1}{100000} = 0.00001$$