Aloha :)
$$1,2\quad=\frac{12}{10}=\frac{\cancel 2\cdot6}{\cancel 2\cdot5}=\frac{6}{5}=\frac{5+1}{5}=1\,\frac{1}{5}$$
$$0,125\,=\frac{125}{1000}=\frac{1\cdot\cancel{125}}{8\cdot\cancel{125}}=\frac{1}{8}$$
$$3,52\;\;=3\,\frac{52}{100}=3\,\frac{\cancel 4\cdot13}{\cancel 4\cdot25}=3\,\frac{13}{25}$$
$$1,3^0\quad\!\!=1$$