2. Выполните действие: a) 5\(\frac{1}{8}\) + 4\(\frac{3}{8}\) b) \(\frac{3}{8}\) : 40; б) 11\(\frac{6}{10}\) - 10\(\frac{2}{5}\); г) \(\frac{1}{10}\) : 8.

Решение:

1. a) \( 5\frac{1}{8} + 4\frac{3}{8} = 9\frac{1+3}{8} = 9\frac{4}{8} = 9\frac{1}{2} \)
2. б) \( \frac{3}{8} : 40 = \frac{3}{8 \times 40} = \frac{3}{320} \)
3. в) \( 11\frac{6}{10} - 10\frac{2}{5} = 11\frac{3}{5} - 10\frac{2}{5} = 1\frac{3-2}{5} = 1\frac{1}{5} \)
4. г) \( \frac{1}{10} : 8 = \frac{1}{10 \times 8} = \frac{1}{80} \)

Ответ: a) \(9\frac{1}{2}\); б) \(\frac{3}{320}\); в) \(1\frac{1}{5}\); г) \(\frac{1}{80}\).