a) $$3\frac{3}{4} = 3 + \frac{3}{4} = 3 + \frac{75}{100} = 3,75$$
б) $$\frac{1}{50} = \frac{2}{100} = 0,02$$
в) $$11\frac{1}{10} = 11 + \frac{1}{10} = 11 + 0,1 = 11,1$$
г) $$7\frac{2}{5} = 7 + \frac{2}{5} = 7 + \frac{4}{10} = 7,4$$
д) $$1\frac{7}{100} = 1 + \frac{7}{100} = 1 + 0,07 = 1,07$$
Ответ: a) 3,75; б) 0,02; в) 11,1; г) 7,4; д) 1,07