Вопрос:

Вычислите: 1) 5 + 1/4; 2) 9 + 5 1/2; 3) 2 + 8/5; 4) 2 1/5 + 2/5; 5) 3 2/25 + 3/25; 6) 5/8 + 3 1/8; 7) 17 9/16 + 3/16; 8) 3 + 7/7; 9) 1 1/7 + 5 5/7; 10) 9 3/8 + 7 1/8; 11) 3 1/2 + 1 1/2; 12) 4 3/5 + 1 2/5; 13) 5 3/5 + 1 3/5; 14) 3 3/7 + 2 6/7; 15) 16 3/8 + 7 1/8; 16) 14 5/16 + 28 5/16; 17) 19 5/12 + 13 11/12; 18) 2 1/2 + 1/6; 19) 3 7/12 + 1/6; 20) 7 6/35 + 1/5; 21) 3 3/4 + 1/5; 22) 4 13/25 + 2/15; 23) 6 1/12 + 1/18; 24) 5 3/10 + 11/15; 25) 9 5/24 + 35/36; 26) 9 1/2 + 3 1/8; 27) 9 9/16 + 2 1/4; 28) 7 1/6 + 2 11/42; 29) 9 2/3 + 1 1/4; 30) 2 7/48 + 11 77/96.

Ответ:

  1. \(5+\frac{1}{4}=5\frac{1}{4}\).
  2. \(9+5\frac{1}{2}=14\frac{1}{2}\).
  3. \(2+\frac{8}{5}=2+1\frac{3}{5}=3\frac{3}{5}\).
  4. \(2\frac{1}{5}+\frac{2}{5}=2\frac{3}{5}\).
  5. \(3\frac{2}{25}+\frac{3}{25}=3\frac{5}{25}=3\frac{1}{5}\).
  6. \(\frac{5}{8}+3\frac{1}{8}=3\frac{6}{8}=3\frac{3}{4}\).
  7. \(17\frac{9}{16}+\frac{3}{16}=17\frac{12}{16}=17\frac{3}{4}\).
  8. \(3+\frac{7}{7}=3+1=4\).
  9. \(1\frac{1}{7}+5\frac{5}{7}=6\frac{6}{7}\).
  10. \(9\frac{3}{8}+7\frac{1}{8}=16\frac{4}{8}=16\frac{1}{2}\).
  11. \(3\frac{1}{2}+1\frac{1}{2}=5\).
  12. \(4\frac{3}{5}+1\frac{2}{5}=6\).
  13. \(5\frac{3}{5}+1\frac{3}{5}=7\frac{1}{5}\).
  14. \(3\frac{3}{7}+2\frac{6}{7}=5\frac{9}{7}=6\frac{2}{7}\).
  15. \(16\frac{3}{8}+7\frac{1}{8}=23\frac{4}{8}=23\frac{1}{2}\).
  16. \(14\frac{5}{16}+28\frac{5}{16}=42\frac{10}{16}=42\frac{5}{8}\).
  17. \(19\frac{5}{12}+13\frac{11}{12}=32\frac{16}{12}=33\frac{1}{3}\).
  18. \(2\frac{1}{2}+\frac{1}{6}=2\frac{3}{6}+\frac{1}{6}=2\frac{2}{3}\).
  19. \(3\frac{7}{12}+\frac{1}{6}=3\frac{7}{12}+\frac{2}{12}=3\frac{3}{4}\).
  20. \(7\frac{6}{35}+\frac{1}{5}=7\frac{6}{35}+\frac{7}{35}=7\frac{13}{35}\).
  21. \(3\frac{3}{4}+\frac{1}{5}=3\frac{15}{20}+\frac{4}{20}=3\frac{19}{20}\).
  22. \(4\frac{13}{25}+\frac{2}{15}=4\frac{39}{75}+\frac{10}{75}=4\frac{49}{75}\).
  23. \(6\frac{1}{12}+\frac{1}{18}=6\frac{3}{36}+\frac{2}{36}=6\frac{5}{36}\).
  24. \(5\frac{3}{10}+\frac{11}{15}=5\frac{9}{30}+\frac{22}{30}=6\frac{1}{30}\).
  25. \(9\frac{5}{24}+\frac{35}{36}=9\frac{15}{72}+\frac{70}{72}=10\frac{13}{72}\).
  26. \(9\frac{1}{2}+3\frac{1}{8}=12\frac{5}{8}\).
  27. \(9\frac{9}{16}+2\frac{1}{4}=9\frac{9}{16}+2\frac{4}{16}=11\frac{13}{16}\).
  28. \(7\frac{1}{6}+2\frac{11}{42}=9\frac{7}{42}+\frac{11}{42}=9\frac{3}{7}\).
  29. \(9\frac{2}{3}+1\frac{1}{4}=10\frac{8}{12}+\frac{3}{12}=10\frac{11}{12}\).
  30. \(2\frac{7}{48}+11\frac{77}{96}=13\frac{14}{96}+\frac{77}{96}=13\frac{91}{96}\).

Ответы: 1) 5 1/4; 2) 14 1/2; 3) 3 3/5; 4) 2 3/5; 5) 3 1/5; 6) 3 3/4; 7) 17 3/4; 8) 4; 9) 6 6/7; 10) 16 1/2; 11) 5; 12) 6; 13) 7 1/5; 14) 6 2/7; 15) 23 1/2; 16) 42 5/8; 17) 33 1/3; 18) 2 2/3; 19) 3 3/4; 20) 7 13/35; 21) 3 19/20; 22) 4 49/75; 23) 6 5/36; 24) 6 1/30; 25) 10 13/72; 26) 12 5/8; 27) 11 13/16; 28) 9 3/7; 29) 10 11/12; 30) 13 91/96.