Ответ:

Чтобы представить дробь в виде десятичной, сокращаем её при необходимости и приводим знаменатель к 10, 100, 1000 и т. д.

А.

  1. \(\frac{1}{2}=0{,}5\)
  2. \(\frac{1}{5}=0{,}2\)
  3. \(\frac{1}{4}=0{,}25\)
  4. \(\frac{1}{25}=0{,}04\)
  5. \(\frac{1}{20}=0{,}05\)
  6. \(\frac{3}{5}=0{,}6\)
  7. \(\frac{3}{50}=0{,}06\)
  8. \(\frac{7}{20}=0{,}35\)
  9. \(\frac{6}{25}=0{,}24\)
  10. \(\frac{3}{4}=0{,}75\)
  11. \(\frac{17}{20}=0{,}85\)
  12. \(\frac{21}{25}=0{,}84\)
  13. \(\frac{33}{50}=0{,}66\)
  14. \(\frac{12}{25}=0{,}48\)
  15. \(\frac{1}{8}=0{,}125\)
  16. \(\frac{6}{20}=0{,}3\)
  17. \(\frac{15}{50}=0{,}3\)
  18. \(\frac{75}{125}=0{,}6\)
  19. \(\frac{46}{200}=0{,}23\)
  20. \(\frac{20}{500}=0{,}04\)

Б.

  1. \(\frac{3}{6}=\frac{1}{2}=0{,}5\)
  2. \(\frac{7}{35}=\frac{1}{5}=0{,}2\)
  3. \(\frac{3}{12}=\frac{1}{4}=0{,}25\)
  4. \(\frac{9}{75}=\frac{3}{25}=0{,}12\)
  5. \(\frac{27}{60}=\frac{9}{20}=0{,}45\)
  6. \(\frac{21}{28}=\frac{3}{4}=0{,}75\)
  7. \(\frac{33}{44}=\frac{3}{4}=0{,}75\)
  8. \(\frac{26}{65}=\frac{2}{5}=0{,}4\)
  9. \(\frac{63}{150}=\frac{21}{50}=0{,}42\)