math lesson 77

  1. 3000 + 9 + 4/100 + 3/10 + 1/1 = 3009.431
  2. 20 + 1 + 9/1000 + 6/100 = 21.9006
  3. 1/1000 + 3/100 + 3/10 + 3/1 + 4/100 = 1333.004
  4. 10 + 6 + 3/100 + 2/10 + 4/1= 16.324

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