Mapping diagrams

This task is about completing mapping diagrams and listing ordered pairs.
a)
i)
Write the correct numbers in the three boxes to complete the mapping diagram to show the relationship "is 5 less than".
 
mapping diagram for the relationship: is 5 less than
 
"is 5 less than"
 
  ii)
Write down the four ordered pairs in the relationship shown in the diagram above.
 
( ____ , ____ )          ( ____ , ____ )          ( ____ , ____ )          ( ____ , ____ )
 
 
 
b) i)
Draw in five arrows to complete the mapping diagram to show the relationship "is half of".
 
mapping diagram for the relationship: is half of
 
     "is half of"
 
  ii)
Write down all the ordered pairs in the relationship shown in the diagram above.