Different rulers

This task is about measuring lengths using a ruler.
 

 

a)
What measurement does each arrow point to on the ruler above?
 
 
i)
 
ii)
 
iii)
A = __________ cm
 
B = __________ cm
 
C = __________ cm
 
b)
Show each of these measurements on the first ruler above with the letter and an arrow.
 
 
i)
 
ii)
 
iii)
D:  5.9 cm
 
E:  7.2 cm
 
F:  8.1 cm