212 Приведите дроби к одному из знаменателей 10 или 100 и запишите соответствующие десятичные дроби: a) $$\frac{1}{2}, \frac{1}{4}, \frac{1}{5}, \frac{1}{20}, \frac{1}{25}, \frac{1}{50}$$ б) $$\frac{3}{4}, \frac{2}{5}, \frac{3}{20}, \frac{2}{25}, \frac{3}{50}$$ в) $$2\frac{1}{2}, 3\frac{1}{4}, 1\frac{7}{20}, 4\frac{4}{25}$$ г) $$\frac{3}{2}, \frac{9}{4}, \frac{63}{20}, \frac{51}{25}$$

a) $$\frac{1}{2} = \frac{5}{10} = 0,5$$ $$\frac{1}{4} = \frac{25}{100} = 0,25$$ $$\frac{1}{5} = \frac{2}{10} = 0,2$$ $$\frac{1}{20} = \frac{5}{100} = 0,05$$ $$\frac{1}{25} = \frac{4}{100} = 0,04$$ $$\frac{1}{50} = \frac{2}{100} = 0,02$$

б) $$\frac{3}{4} = \frac{75}{100} = 0,75$$ $$\frac{2}{5} = \frac{4}{10} = 0,4$$ $$\frac{3}{20} = \frac{15}{100} = 0,15$$ $$\frac{2}{25} = \frac{8}{100} = 0,08$$ $$\frac{3}{50} = \frac{6}{100} = 0,06$$

в) $$2\frac{1}{2} = 2 + \frac{1}{2} = 2 + \frac{5}{10} = 2,5$$ $$3\frac{1}{4} = 3 + \frac{1}{4} = 3 + \frac{25}{100} = 3,25$$ $$1\frac{7}{20} = 1 + \frac{7}{20} = 1 + \frac{35}{100} = 1,35$$ $$4\frac{4}{25} = 4 + \frac{4}{25} = 4 + \frac{16}{100} = 4,16$$

г) $$\frac{3}{2} = \frac{15}{10} = 1,5$$ $$\frac{9}{4} = \frac{225}{100} = 2,25$$ $$\frac{63}{20} = \frac{315}{100} = 3,15$$ $$\frac{51}{25} = \frac{204}{100} = 2,04$$