Niloxix Niloxix
  • 24-11-2015
  • Mathematics
contestada

Explain how estimation helps you to place the decimal point when multiplying 3.9 times 5.3

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WorldCitizen WorldCitizen
  • 24-11-2015
I see it like this: we mupliply almost 4 by a little more then 5, so the result will be around 20 (4*5=20) : so the decimal point must be after the 20 (and it is, the result is 20.67
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