Phân số chỉ số phần đã tô màu là:  

\(\frac{5}{9}\,\, + \,\,\frac{5}{9}\,\, \times \,\,\frac{4}{5}\,\, + \,\,\frac{5}{9}\,\, \times \,\,\frac{{14}}{5}\)

= ……………………………………..

= ……………………………………..

= ……………………………………..

= ……………………………………..

\(\frac{{5\,\, \times \,\,7\,\, \times \,\,9}}{{2\,\, \times \,\,3\,\, \times \,\,7}}\)

=……………………………………..

= ……………………………………..

= ……………………………………..

= ……………………………………..

\(\frac{2}{5}\,\, + \,\,.........\,\, = \,\,\frac{1}{2}\)

\(.........\,\,:\,\,\frac{5}{9}\,\, = \,\,\frac{5}{{24}}\)

\(\frac{8}{{21}}\,\, \times \,\,..........\,\, = \,\,\frac{8}{3}\)

\(\frac{3}{{16}}\,\, - \,\,...........\,\, = \,\,\frac{1}{8}\)