Question

rút gọn các phân số thập phân sau đến tối giản 

\(\dfrac{15}{100}\)      \(\dfrac{2}{10}\)       \(\dfrac{25}{100}\)       \(\dfrac{75}{1000}\)

Answer 1

15/100=3/20

2/10=1/5

25/100=1/4

75/1000=3/40

Answer 2

3/20

1/5

1/4

3/40

Answer 3

\(\dfrac{15}{100}\)=\(\dfrac{3}{20}\) \(\dfrac{2}{10}\)=\(\dfrac{1}{5}\)

\(\dfrac{25}{100}\)=\(\dfrac{1}{4}\) \(\dfrac{75}{1000}\)=\(\dfrac{3}{40}\)

Answer 4

\(\dfrac{3}{20}\)             \(\dfrac{1}{5}\)                       \(\dfrac{1}{4}\)                 \(\dfrac{3}{40}\)

Answer 5

3/20

1/5

1/4

3/40

 

Answer 6

\(\dfrac{15}{100}=\dfrac{15:5}{100:5}=\dfrac{3}{20}\)

\(\dfrac{2}{10}=\dfrac{2:2}{10:2}=\dfrac{1}{5}\)

\(\dfrac{25}{100}=\dfrac{25:25}{100:25}=\dfrac{1}{4}\)

\(\dfrac{75}{1000}=\dfrac{75:25}{1000:25}=\dfrac{3}{40}\)

Answer 7

15/100 = 3/20
2/10 = 1/5
25/100 = 1/4
75/1000 = 3/40