Question

Viết các phân số sau thành phân số thập phân: \(\dfrac{13}{2},\dfrac{11}{40},\dfrac{32}{5},\dfrac{21}{250},\dfrac{1}{200}\)

Answer 1

  

Answer 2

\(\dfrac{13}{2}=6,5=\dfrac{65}{10}\)

\(\dfrac{11}{40}=0,275=\dfrac{275}{1000}\)

\(\dfrac{32}{5}=6,4=\dfrac{64}{10}\)

\(\dfrac{21}{250}=0,084=\dfrac{84}{1000}\)

\(\dfrac{1}{200}=0,005=\dfrac{5}{1000}\)

Answer 3

`13/2=7,5`

`11/40=0,275`

`32/5=6,4`

`21/250=0,084`

`1/200=0,005`

Answer 4

\(\dfrac{13}{2}=\dfrac{13x5}{2x5}=\dfrac{65}{10}\)

\(\dfrac{11}{40}=\dfrac{11x25}{40x25}=\dfrac{275}{1000}\)

\(\dfrac{32}{5}=\dfrac{32x2}{5x2}=\dfrac{64}{10}\)

\(\dfrac{21}{250}=\dfrac{21x4}{250x4}=\dfrac{84}{1000}\)

\(\dfrac{1}{200}=\dfrac{1x5}{200x5}=\dfrac{5}{1000}\)