Запишем в виде десятичных дробей смешанные числа:
- $$3\frac{1}{20} = 3 + \frac{1}{20} = 3 + \frac{1 \cdot 5}{20 \cdot 5} = 3 + \frac{5}{100} = 3,05$$
- $$2\frac{3}{50} = 2 + \frac{3}{50} = 2 + \frac{3 \cdot 2}{50 \cdot 2} = 2 + \frac{6}{100} = 2,06$$
- $$4\frac{8}{25} = 4 + \frac{8}{25} = 4 + \frac{8 \cdot 4}{25 \cdot 4} = 4 + \frac{32}{100} = 4,32$$
- $$7\frac{11}{20} = 7 + \frac{11}{20} = 7 + \frac{11 \cdot 5}{20 \cdot 5} = 7 + \frac{55}{100} = 7,55$$
- $$12\frac{4}{25} = 12 + \frac{4}{25} = 12 + \frac{4 \cdot 4}{25 \cdot 4} = 12 + \frac{16}{100} = 12,16$$
- $$9\frac{13}{50} = 9 + \frac{13}{50} = 9 + \frac{13 \cdot 2}{50 \cdot 2} = 9 + \frac{26}{100} = 9,26$$
Ответ:
- $$3,05$$
- $$2,06$$
- $$4,32$$
- $$7,55$$
- $$12,16$$
- $$9,26$$