Решение:
- \( \frac{13}{20} = \frac{13 \times 5}{20 \times 5} = \frac{65}{100} = 0.65 \)
- \( \frac{7}{25} = \frac{7 \times 4}{25 \times 4} = \frac{28}{100} = 0.28 \)
- \( \frac{59}{50} = \frac{59 \times 2}{50 \times 2} = \frac{118}{100} = 1.18 \)
- \( \frac{1}{2} = \frac{1 \times 5}{2 \times 5} = \frac{5}{10} = 0.5 \)
- \( \frac{14}{5} = \frac{14 \times 2}{5 \times 2} = \frac{28}{10} = 2.8 \)
- \( \frac{19}{25} = \frac{19 \times 4}{25 \times 4} = \frac{76}{100} = 0.76 \)
- \( \frac{43}{50} = \frac{43 \times 2}{50 \times 2} = \frac{86}{100} = 0.86 \)
- \( \frac{27}{25} = \frac{27 \times 4}{25 \times 4} = \frac{108}{100} = 1.08 \)
- \( \frac{9}{50} = \frac{9 \times 2}{50 \times 2} = \frac{18}{100} = 0.18 \)
- \( \frac{1}{5} = \frac{1 \times 2}{5 \times 2} = \frac{2}{10} = 0.2 \)
- \( \frac{11}{20} = \frac{11 \times 5}{20 \times 5} = \frac{55}{100} = 0.55 \)
- \( \frac{24}{25} = \frac{24 \times 4}{25 \times 4} = \frac{96}{100} = 0.96 \)
- \( \frac{31}{20} = \frac{31 \times 5}{20 \times 5} = \frac{155}{100} = 1.55 \)
- \( \frac{1}{4} = \frac{1 \times 25}{4 \times 25} = \frac{25}{100} = 0.25 \)
- \( \frac{7}{4} = \frac{7 \times 25}{4 \times 25} = \frac{175}{100} = 1.75 \)
- \( \frac{23}{50} = \frac{23 \times 2}{50 \times 2} = \frac{46}{100} = 0.46 \)
- \( \frac{4}{25} = \frac{4 \times 4}{25 \times 4} = \frac{16}{100} = 0.16 \)
- \( \frac{2}{5} = \frac{2 \times 2}{5 \times 2} = \frac{4}{10} = 0.4 \)
- \( \frac{1}{20} = \frac{1 \times 5}{20 \times 5} = \frac{5}{100} = 0.05 \)
- \( \frac{3}{2} = \frac{3 \times 5}{2 \times 5} = \frac{15}{10} = 1.5 \)
- \( \frac{7}{50} = \frac{7 \times 2}{50 \times 2} = \frac{14}{100} = 0.14 \)
Ответ: 1) 0.65, 2) 0.28, 3) 1.18, 4) 0.5, 5) 2.8, 6) 0.76, 7) 0.86, 8) 1.08, 9) 0.18, 10) 0.2, 11) 0.55, 12) 0.96, 13) 1.55, 14) 0.25, 15) 1.75, 16) 0.46, 17) 0.16, 18) 0.4, 19) 0.05, 20) 1.5, 21) 0.14.