Fractions with different denominators are called _______ fractions .

 $\frac{1}{2}\ \ \ \ \ \ \ \ \frac{1}{2}$  

Part of a whole is called fraction.

 $\frac{6}{9}\ \ \ \ \ \ \ \ \frac{8}{9}$  

 $\frac{5}{5}\ \ \ \ \ \ \frac{6}{5}$  

 $\frac{1}{2\ }\ \ \ \ \ \ \ \ \frac{2}{4}$