Odpowiedź:
[tex]a)\frac{1}{4}*1,6=\frac{1}{4} *\frac{16}{10} =\frac{4}{10} =\frac{2}{5} \\\\3,6*\frac{1}{3} =\frac{36}{10} *\frac{1}{3} =\frac{12}{10} =1,2\\\\\frac{1}{6} *0,12=\frac{1}{6} *\frac{12}{100} =\frac{2}{100} =0,02\\\\2\frac{1}{5} *1,5=\frac{11}{5} *\frac{15}{10} =\frac{33}{10} =3,3\\\\0,4*4\frac{3}{4} =\frac{2}{5} *\frac{15}{4} =\frac{3}{2} =1,5[/tex]
[tex]b)\frac{4}{7}:3,2=\frac{4}{7}:\frac{32}{10} =\frac{4}{7} *\frac{10}{32}=\frac{10}{56}= \frac{5}{28} \\\\1,8:\frac{2}{5} =\frac{18}{10}*\frac{5}{2} =\frac{9}{2} =4,5\\\\2,4:\frac{1}{2} =\frac{24}{10} *\frac{2}{1} =\frac{24}{5}=4\frac{4}{5} \\\\5,5:2\frac{3}{4} =\frac{55}{10} :\frac{11}{4} =\frac{11}{2} *\frac{4}{11} =\frac{2}{1} =2\\\\2\frac{1}{4} :0,75=\frac{9}{4}*\frac{4}{3} =\frac{3}{1} =3[/tex]
