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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