Представьте в виде обыкновенной дроби:

1. 10.19 a) 0,(3)  $$0,(3) = \frac{3}{9} = \frac{1}{3}$$
2. 10.19 б) 0,(15)  $$0,(15) = \frac{15}{99} = \frac{5}{33}$$
3. 10.19 в) 0,(6)  $$0,(6) = \frac{6}{9} = \frac{2}{3}$$
4. 10.19 г) 0,(108)  $$0,(108) = \frac{108}{999} = \frac{12}{111} = \frac{4}{37}$$
5. 10.20 a) 15,(3)  $$15,(3) = 15 \frac{3}{9} = 15 \frac{1}{3} = \frac{46}{3}$$
6. 10.20 б) 2,(14)  $$2,(14) = 2 \frac{14}{99} = 2 \frac{14}{99} = \frac{212}{99}$$
7. 10.20 в) 7,(2)  $$7,(2) = 7 \frac{2}{9} = \frac{65}{9}$$
8. 10.20 г) 23,(25)  $$23,(25) = 23 \frac{25}{99} = \frac{2302}{99}$$
9. 10.21 a) 0,0(24)  $$0,0(24) = \frac{24}{990} = \frac{4}{165}$$
10. 10.21 б) 0,00(3)  $$0,00(3) = \frac{3}{9900} = \frac{1}{3300}$$
11. 10.21 в) 0,0(6)  $$0,0(6) = \frac{6}{90} = \frac{1}{15}$$
12. 10.21 г) 0,00(18)  $$0,00(18) = \frac{18}{9900} = \frac{1}{550}$$
13. 10.22 a) 1,6(1)  $$1,6(1) = 1,6 + \frac{1}{90} = \frac{16}{10} + \frac{1}{90} = \frac{144}{90} + \frac{1}{90} = \frac{145}{90} = \frac{29}{18}$$
14. 10.22 б) 2,03(5)  $$2,03(5) = 2,03 + \frac{5}{900} = \frac{203}{100} + \frac{5}{900} = \frac{1827}{900} + \frac{5}{900} = \frac{1832}{900} = \frac{458}{225}$$
15. 10.22 в) 3,9(12)  $$3,9(12) = 3,9 + \frac{12}{990} = \frac{39}{10} + \frac{12}{990} = \frac{3861}{990} + \frac{12}{990} = \frac{3873}{990} = \frac{1291}{330}$$
16. 10.22 г) 0,7(72)  $$0,7(72) = 0,7 + \frac{72}{990} = \frac{7}{10} + \frac{72}{990} = \frac{693}{990} + \frac{72}{990} = \frac{765}{990} = \frac{17}{22}$$