$\frac{2}{5}\ of\ 450\ \ =$  

 $\frac{5}{7}\ \times\ 280\ =$  

 $\frac{9}{10}\ \times\ 1000\ =$  

 $1\frac{1}{3}\ \ of\ \ 300\ =$  

 $2\frac{1}{4}\ \ of\ \ 160\ =$  

 $1\frac{1}{8}\ \ of\ \ 160\ =\$  

 $1\frac{3}{4}\ \ \times\ 80\ =$