Shading fractions of sets and shapes

This task is about finding fractions of sets and shapes.
a)
Shade 1414 of the set of counters.
 
 
 
b)
Shade 2323 of each of the three shapes below.
 
 
i) ii)
 
iii)
c)
Shade 3535 of the set of counters.
 
 
 
   
d)
Shade 5858 of the grid.