[tex]900 *6000 =5400000\\\\1 \frac{4}{5} + 3 \frac{2}{5} =4\frac{6}{5}=5\frac{1}{5} \\\\4 \frac{4}{8} - \frac{6}{8} =3\frac{6}{8} \\\\\frac{2}{3} *1\frac{1}{3} =\frac{2}{3} *\frac{4}{3}=\frac{8}{9} \\\\\frac{10}{11} :\frac{5}{10} =\frac{10}{11} *\frac{10}{5} =\frac{100}{55} =\frac{20}{11}=1\frac{9}{11}[/tex]
Mam nadzieję, że pomogłam :)
