huynh anh phuong
17/04/2018 at 12:31-
Lê Anh Duy 17/04/2018 at 15:10\(\dfrac{4}{10}=\dfrac{40}{100}=40\%\)
\(\dfrac{23}{100}=23\%\)
\(\dfrac{254}{1000}=\dfrac{25.4}{100}=25.4\%\)
\(\dfrac{7890}{10000}=\dfrac{78.9}{100}=78.9\%\)
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