[tex] \frac{36m}{18km}= \frac{36m}{180000m}=0,0002 \\ \frac{75dm}{7,5hm} = \frac{0,75hm}{7,5hm}=0,1 \\ \frac{35 \frac{1}{2} m^{2} }{142ha}= \frac{ 35,5 m^{2} }{1420000 m^{2} } = 0,000025 \\ \frac{6,(3) dm^{3} }{0,(6) m^{3} }= \frac{ \frac{63-6}{9} dm^{3} }{ \frac{6}{9} m^{3} } = \frac{ \frac{57}{9} dm^{3} }{ \frac{2}{3}*1000 dm^{3} } = \frac{ \frac{57}{9} dm^{3} }{ \frac{2000}{3} dm^{3} }= \frac{57}{9}* \frac{3}{2000}= \frac{19}{2000} =0,0095 [/tex]
[tex] \frac{5h20min}{7h40min}= \frac{300min+20min}{420min+40min}= \frac{320min}{460min}= \frac{16}{23} [/tex]
