Simplify by combining similar terms:
         5 +20

63 Which is greater?
        (i) or 
         (ii) or
         (iii) or
         (iv) or
         (v) or
         (vi) or 64 Arrange in descending order of magnitude
          (i)
          (ii) , ,
          (iii) , ,
66 Simplify by combining similar terms:
         + 67 Simplify by combining similar terms:  
          4-3+2