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[tex]1. \frac{1}{5} + \frac{6}{10} - \frac{25}{100} = \frac{4}{5} - \frac{25}{100} = \frac{11}{100} = 0.3[/tex]
[tex] \frac{19}{100} + 2 \times \frac{2}{5} - 1 \times \frac{8}{6} = \frac{57}{125} - 1 \times \frac{6}{8} = \frac{14}{8} [/tex]