Equivalent Fractions

Fill in the missing number,  $\frac{2}{5}=\frac{?}{10}$  

Fill in the missing number,  $\frac{2}{3}=\frac{4}{?}$  

Fill in the missing number,  $\frac{2}{5}=\frac{6}{?}$  

Fill in the missing number,  $\frac{8}{12}=\frac{?}{3}$  

Fill in the missing number,  $\frac{1}{2}=\frac{?}{4}$  

Fill in the missing number,  $\frac{1}{2}=\frac{?}{8}$  

Fill in the missing number,  $\frac{1}{2}=\frac{?}{10}$  

Fill in the missing number,  $\frac{4}{7}=\frac{8}{?}$  

Fill in the missing number,  $\frac{3}{5}=\frac{?}{10}$  

Fill in the missing number,  $\frac{6}{8}=\frac{3}{?}$