Câu hỏi của Hoàng Kim Nhung

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.

Sahara · Accepted Answer

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)$\dfrac{14}{28}=\dfrac{1}{2}$
$\dfrac{25}{50}=\dfrac{1}{2}$
$\dfrac{48}{30}=\dfrac{8}{5}$
$\dfrac{81}{54}=\dfrac{3}{2}$

Câu trả lời:

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)$\dfrac{14}{28}=\dfrac{1}{2}$
$\dfrac{25}{50}=\dfrac{1}{2}$
$\dfrac{48}{30}=\dfrac{8}{5}$
$\dfrac{81}{54}=\dfrac{3}{2}$

Nguyễn Lê Phước Thịnh · Answer

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