math lesson 77

  1. 3000 + 9 + 4/100 + 3/10 + 1/1 = 3009.431
  2. 20+1+9000+6= 21.9006
  3. 1000+300+30+3+4=1333.004
  4. 10+6+300+20+4=16.324

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