Вопрос:

в) 5 + 1/3 =; г) 5 − 1/3 = 4 3/3 − 1/3 = 4 + 2/3 =; д) 7 5/8 + 3 1/8 = 10 + (5/8 + 1/8) =; е) 5 3/10 + 2 1/5 = 5 3/10 + 2 2/10 = 7 + (3/10 + 2/10) =; ж) 5 3/10 − 2 1/5 = 5 3/10 − 2 2/10 = 3 + (3/10 − 2/10) =; з) 3 1/2 − 1 3/4 = 3 2/4 − 1 3/4 = 2 6/4 − 1 3/4 = 1 + 3/4 =

Ответ:

  1. в) \(5+\frac{1}{3}=5\frac{1}{3}\).

  2. г) \(5-\frac{1}{3}=4\frac{3}{3}-\frac{1}{3}=4+\frac{2}{3}=4\frac{2}{3}\).

  3. д) \(7\frac{5}{8}+3\frac{1}{8}=10+\left(\frac{5}{8}+\frac{1}{8}\right)=10\frac{6}{8}=10\frac{3}{4}\).

  4. е) \(5\frac{3}{10}+2\frac{1}{5}=5\frac{3}{10}+2\frac{2}{10}=7+\left(\frac{3}{10}+\frac{2}{10}\right)=7\frac{5}{10}=7\frac{1}{2}\).

  5. ж) \(5\frac{3}{10}-2\frac{1}{5}=5\frac{3}{10}-2\frac{2}{10}=3+\left(\frac{3}{10}-\frac{2}{10}\right)=3\frac{1}{10}\).

  6. з) \(3\frac{1}{2}-1\frac{3}{4}=3\frac{2}{4}-1\frac{3}{4}=2\frac{6}{4}-1\frac{3}{4}=1\frac{3}{4}\).

Ответ: в) \(5\frac{1}{3}\); г) \(4\frac{2}{3}\); д) \(10\frac{3}{4}\); е) \(7\frac{1}{2}\); ж) \(3\frac{1}{10}\); з) \(1\frac{3}{4}\).