Контрольные задания
Вопрос:

Вычислите: 1) \(6\frac{5}{18}+2\frac{8}{18}\); 2) \(5\frac{4}{7}+3\frac{6}{7}\); 3) \(1-\frac{15}{19}\); 4) \(8-3\frac{4}{9}\); 5) \(7\frac{3}{8}-2\frac{5}{8}\); 6) \(14\frac{15}{32}-9\frac{19}{32}\).

Фото задания: Вычислите: 1) \(6\frac{5}{18}+2\frac{8}{18}\); 2) \(5\frac{4}{7}+3\frac{6}{7}\); 3) \(1-\frac{15}{19}\); 4)…Фото задания

Ответ:

  1. \(6\frac{5}{18}+2\frac{8}{18}=8\frac{13}{18}\).
  2. \(5\frac{4}{7}+3\frac{6}{7}=8\frac{10}{7}=9\frac{3}{7}\).
  3. \(1-\frac{15}{19}=\frac{19}{19}-\frac{15}{19}=\frac{4}{19}\).
  4. \(8-3\frac{4}{9}=7\frac{9}{9}-3\frac{4}{9}=4\frac{5}{9}\).
  5. \(7\frac{3}{8}-2\frac{5}{8}=6\frac{11}{8}-2\frac{5}{8}=4\frac{6}{8}=4\frac{3}{4}\).
  6. \(14\frac{15}{32}-9\frac{19}{32}=13\frac{47}{32}-9\frac{19}{32}=4\frac{28}{32}=4\frac{7}{8}\).

Ответ: 1) \(8\frac{13}{18}\); 2) \(9\frac{3}{7}\); 3) \(\frac{4}{19}\); 4) \(4\frac{5}{9}\); 5) \(4\frac{3}{4}\); 6) \(4\frac{7}{8}\).