1.
a) 109,7
b) 3,2-1,8=1,4
c) [tex]1\frac{3}{4}+2\frac{2}{3}=\frac{7}{4}+\frac{8}{3}=\frac{21}{12} +\frac{32}{12} = \frac{33}{12} = 2\frac{3}{4}[/tex]
d) [tex]1\frac{2}{7} * 1\frac{2}{5} = \frac{9}{7}*\frac{7}{5}=\frac{9}{5}=1\frac{4}{5}=1,8[/tex]
e) [tex]\frac{27}{10} * \frac{4}{15} = \frac{9}{5} * \frac{2}{5} = \frac{18}{25} = \frac{72}{100} = 0,72[/tex]
f) [tex](\frac{3}{10} )^{3}=\frac{27}{1000} = 0,027[/tex]
