$a)\frac{3}{5}\cdot \frac{10}{11}=\frac{3}{1}\cdot \frac{2}{11}=\frac{6}{11}$  

$b)\frac{2}{9}\cdot \frac{2}{3}=\frac{4}{27}$  

$c)\frac{4}{9}\cdot \frac{7}{8}=\frac{1}{9}\cdot \frac{7}{2}=\frac{7}{18}$  

$d)\frac{4}{15}\cdot \frac{5}{6}=\frac{4}{3}\cdot \frac{1}{6}=\frac{2}{3}\cdot \frac{1}{3}=\frac{2}{9}$  

$e)1\frac{1}{7}\cdot \frac{1}{4}=\frac{8}{7}\cdot \frac{1}{4}=\frac{2}{7}\cdot \frac{1}{1}=\frac{2}{7}$  

$f)1\frac{1}{8}\cdot 5\frac{1}{3}=\frac{9}{8}\cdot \frac{16}{3}=$   $\frac{3}{8}\cdot \frac{16}{1}=$   $\frac{3}{1}\cdot \frac{2}{1}=\frac{6}{1}=6$  

$g)4\frac{2}{3}\cdot \frac{3}{8}=\frac{14}{3}\cdot \frac{3}{8}=$   $\frac{14}{1}\cdot \frac{1}{8}=\frac{14}{8}=\frac{7}{4}=1\frac{3}{4}$  

$h)2\frac{1}{3}\cdot \frac{9}{14}=\frac{7}{3}\cdot \frac{9}{14}=$   $\frac{1}{3}\cdot \frac{9}{2}=$   $\frac{1}{1}\cdot \frac{3}{2}=\frac{3}{2}=1\frac{1}{2}$