liliannyrodriguez
liliannyrodriguez liliannyrodriguez
  • 12-12-2016
  • Mathematics
contestada

i need help on 40 time 50 using mental math

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Аноним Аноним
  • 12-12-2016
50*40 is 2000, first you do 5*4=20 , then add the 2 0's
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