Question

Biến những phân số này thành phân số thập phân :

13/2 ; 4/5 ; 22/55

Answer 1

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

\(\dfrac{4}{5}\)=\(\dfrac{8}{10}\)

\(\dfrac{22}{55}\)=\(\dfrac{4}{10}\)

Answer 2

13/2= 65/10

4/5=8/10

22/55= 2/5=4/10

Answer 3

\(\dfrac{13}{2}=\dfrac{13\times5}{2\times5}=\dfrac{45}{10}\\ \dfrac{4}{5}=\dfrac{4\times2}{5\times2}=\dfrac{8}{10}\\ \dfrac{22}{55}=\dfrac{22:11}{55:11}=\dfrac{2}{5}=\dfrac{2\times2}{5\times2}=\dfrac{4}{10}\)