Контрольные задания > № 1 1) \(6 - 2\frac{7}{8}\) 2) \(5\frac{1}{3} + 2\frac{3}{15}\) 3) \(9\frac{5}{6} - 3\) 4) \(7\frac{1}{4} - 3\frac{3}{5}\) 5) \(2\frac{8}{14} + 6\frac{18}{21}\) 6) \(10 - 4\frac{2}{5}\) 7) \(8\frac{1}{9} - 5\frac{5}{6}\) 8) \(1\frac{3}{10} + 3\frac{2}{5}\) 9) \(9\frac{1}{3} - 5\frac{2}{7}\) 10) \(4\frac{2}{3} - 1\frac{1}{6}\) 11) \(6\frac{2}{7} + 10\) 12) \(7\frac{11}{16} + 2\frac{13}{24}\) 13) \(12 - 5\frac{13}{18}\) 14) \(10\frac{18}{25} - 8\) 15) \(8\frac{11}{20} + 5\frac{13}{24}\) 16) \(9\frac{17}{24} - 7\) 17) \(9 - 7\frac{18}{20}\) 18) \(12\frac{3}{7} + 4\frac{11}{9}\) 19) \(6\frac{11}{20} + 4\frac{7}{15}\) 20) \(5\frac{13}{16} + 3\) 21) \(10\frac{1}{18} - 4\frac{2}{3}\) 22) \(8 - 1\frac{5}{6}\) 23) \(7\frac{12}{16} - 4\) 24) \(2\frac{5}{6} + 1\frac{3}{4}\)
Вопрос:

№ 1 1) \(6 - 2\frac{7}{8}\) 2) \(5\frac{1}{3} + 2\frac{3}{15}\) 3) \(9\frac{5}{6} - 3\) 4) \(7\frac{1}{4} - 3\frac{3}{5}\) 5) \(2\frac{8}{14} + 6\frac{18}{21}\) 6) \(10 - 4\frac{2}{5}\) 7) \(8\frac{1}{9} - 5\frac{5}{6}\) 8) \(1\frac{3}{10} + 3\frac{2}{5}\) 9) \(9\frac{1}{3} - 5\frac{2}{7}\) 10) \(4\frac{2}{3} - 1\frac{1}{6}\) 11) \(6\frac{2}{7} + 10\) 12) \(7\frac{11}{16} + 2\frac{13}{24}\) 13) \(12 - 5\frac{13}{18}\) 14) \(10\frac{18}{25} - 8\) 15) \(8\frac{11}{20} + 5\frac{13}{24}\) 16) \(9\frac{17}{24} - 7\) 17) \(9 - 7\frac{18}{20}\) 18) \(12\frac{3}{7} + 4\frac{11}{9}\) 19) \(6\frac{11}{20} + 4\frac{7}{15}\) 20) \(5\frac{13}{16} + 3\) 21) \(10\frac{1}{18} - 4\frac{2}{3}\) 22) \(8 - 1\frac{5}{6}\) 23) \(7\frac{12}{16} - 4\) 24) \(2\frac{5}{6} + 1\frac{3}{4}\)

Смотреть решения всех заданий с листа

Ответ:

Решение:

  1. \(6 - 2\frac{7}{8} = 5\frac{8}{8} - 2\frac{7}{8} = 3\frac{1}{8}\)
  2. \(5\frac{1}{3} + 2\frac{3}{15} = 5\frac{5}{15} + 2\frac{3}{15} = 7\frac{8}{15}\)
  3. \(9\frac{5}{6} - 3 = 6\frac{5}{6}\)
  4. \(7\frac{1}{4} - 3\frac{3}{5} = 7\frac{5}{20} - 3\frac{12}{20} = 6\frac{25}{20} - 3\frac{12}{20} = 3\frac{13}{20}\)
  5. \(2\frac{8}{14} + 6\frac{18}{21} = 2\frac{4}{7} + 6\frac{6}{7} = 8\frac{10}{7} = 9\frac{3}{7}\)
  6. \(10 - 4\frac{2}{5} = 9\frac{5}{5} - 4\frac{2}{5} = 5\frac{3}{5}\)
  7. \(8\frac{1}{9} - 5\frac{5}{6} = 8\frac{2}{18} - 5\frac{15}{18} = 7\frac{20}{18} - 5\frac{15}{18} = 2\frac{5}{18}\)
  8. \(1\frac{3}{10} + 3\frac{2}{5} = 1\frac{3}{10} + 3\frac{4}{10} = 4\frac{7}{10}\)
  9. \(9\frac{1}{3} - 5\frac{2}{7} = 9\frac{7}{21} - 5\frac{6}{21} = 4\frac{1}{21}\)
  10. \(4\frac{2}{3} - 1\frac{1}{6} = 4\frac{4}{6} - 1\frac{1}{6} = 3\frac{3}{6} = 3\frac{1}{2}\)
  11. \(6\frac{2}{7} + 10 = 16\frac{2}{7}\)
  12. \(7\frac{11}{16} + 2\frac{13}{24} = 7\frac{33}{48} + 2\frac{26}{48} = 9\frac{59}{48} = 10\frac{11}{48}\)
  13. \(12 - 5\frac{13}{18} = 11\frac{18}{18} - 5\frac{13}{18} = 6\frac{5}{18}\)
  14. \(10\frac{18}{25} - 8 = 2\frac{18}{25}\)
  15. \(8\frac{11}{20} + 5\frac{13}{24} = 8\frac{33}{60} + 5\frac{65}{60} = 13\frac{98}{60} = 14\frac{38}{60} = 14\frac{19}{30}\)
  16. \(9\frac{17}{24} - 7 = 2\frac{17}{24}\)
  17. \(9 - 7\frac{18}{20} = 8\frac{20}{20} - 7\frac{18}{20} = 1\frac{2}{20} = 1\frac{1}{10}\)
  18. \(12\frac{3}{7} + 4\frac{11}{9} = 12\frac{27}{63} + 4\frac{77}{63} = 16\frac{104}{63} = 17\frac{41}{63}\)
  19. \(6\frac{11}{20} + 4\frac{7}{15} = 6\frac{33}{60} + 4\frac{28}{60} = 10\frac{61}{60} = 11\frac{1}{60}\)
  20. \(5\frac{13}{16} + 3 = 8\frac{13}{16}\)
  21. \(10\frac{1}{18} - 4\frac{2}{3} = 10\frac{1}{18} - 4\frac{12}{18} = 9\frac{19}{18} - 4\frac{12}{18} = 5\frac{7}{18}\)
  22. \(8 - 1\frac{5}{6} = 7\frac{6}{6} - 1\frac{5}{6} = 6\frac{1}{6}\)
  23. \(7\frac{12}{16} - 4 = 7\frac{3}{4} - 4 = 3\frac{3}{4}\)
  24. \(2\frac{5}{6} + 1\frac{3}{4} = 2\frac{10}{12} + 1\frac{9}{12} = 3\frac{19}{12} = 4\frac{7}{12}\)
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