arwaandaya arwaandaya
  • 21-01-2016
  • Mathematics
contestada

explain how an estimate b elps you to place the decimal point when multiplying 3.9×5.3

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shininggirl2005
shininggirl2005 shininggirl2005
  • 21-01-2016
 The estimate, 4 × 5 = 20, helps me know that the decimal point should be placed so that the answer is close to 20.
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