Question

Rút gọn phân số sau

a.5/25;75/100;64/720;16/1000      b.4/6;12/8;15/25;11/22        c.5/10;12/36;9/72;75/300               d.14/28;25/50;48/30;81/54.

Answer 1

a)\(\dfrac{5}{25}=\dfrac{1}{5}\)
\(\dfrac{75}{100}=\dfrac{3}{4}\)
\(\dfrac{64}{720}=\dfrac{4}{45}\)
\(\dfrac{16}{1000}=\dfrac{2}{125}\)
b)\(\dfrac{4}{6}=\dfrac{2}{3}\)
\(\dfrac{12}{8}=\dfrac{3}{2}\)
\(\dfrac{15}{25}=\dfrac{3}{5}\)
\(\dfrac{11}{22}=\dfrac{1}{2}\)
c)\(\dfrac{5}{10}=\dfrac{1}{2}\)
\(\dfrac{12}{36}=\dfrac{1}{3}\)

\(\dfrac{9}{72}=\dfrac{1}{8}\)

\(\dfrac{75}{300}=\dfrac{1}{4}\)
d)\(\dfrac{14}{28}=\dfrac{1}{2}\)
\(\dfrac{25}{50}=\dfrac{1}{2}\)
\(\dfrac{48}{30}=\dfrac{8}{5}\)
\(\dfrac{81}{54}=\dfrac{3}{2}\)

Answer 2

a: 5/25=1/5

75/100=3/4

64/720=4/45

16/1000=2/125

b: 4/6=2/3

12/8=3/2

15/25=3/5

11/22=1/2

c: 5/10=1/2

12/36=1/3

9/72=1/8

75/300=1/4

d: 14/28=1/2

25/50=1/2

48/30=8/5

81/54=3/2