1 million microphones = 1 megaphone
  1 million bicycles = 2 megacycles
  2000 mockingbirds = two kilomockingbirds
  10 cards = 1 decacards
  1/2 lavatory = 1 demijohn
  1 millionth of a fish = 1 microfiche
  453.6 graham crackers = 1 pound cake
  10 rations = 1 decoration
  10 millipedes = 1 centipede
  3 1/3 tridents = 1 decadent
  10 monologs = 5 dialogues
  2 monograms = 1 diagram
  8 nickels = 2 paradigms 
  2 baby sitters = 1 gramma grampa