Question

Viết các phân số sau theo thứ tự từ lớn đến bé.

b) 1/2; 2/3 ; 5/6 ; 7/12.

 

Answer 1

\(\dfrac{5}{6}>\dfrac{2}{3}>\dfrac{7}{12}>\dfrac{1}{2}\)

Answer 2

\(\dfrac{1}{2};\dfrac{2}{3};\dfrac{5}{6};\dfrac{7}{12}\)

\(\dfrac{1}{2}=\dfrac{1\times6}{2\times6}=\dfrac{6}{12};\dfrac{2}{3}=\dfrac{2\times4}{3\times4}=\dfrac{8}{12};\dfrac{5}{6}=\dfrac{5\times2}{6\times2}=\dfrac{10}{12};\dfrac{7}{12}\)

\(\dfrac{6}{12}< \dfrac{7}{12}< \dfrac{8}{12}< \dfrac{10}{12}hay\dfrac{1}{2}< \dfrac{7}{12}< \dfrac{2}{3}< \dfrac{5}{6}\)

 

Answer 3

\(\dfrac{5}{6};\dfrac{2}{3};\dfrac{7}{12};\dfrac{1}{2}\)

Answer 4

\(\dfrac{1}{2}=\dfrac{1.6}{2.6}=\dfrac{6}{12}\)

\(\dfrac{2}{3}=\dfrac{2.4}{3.4}=\dfrac{8}{12}\)

\(\dfrac{5}{6}=\dfrac{5.2}{6.2}=\dfrac{10}{12}\)

\(\dfrac{7}{12}\) giữ nguyên

=>\(\dfrac{1}{2}< \dfrac{7}{12}< \dfrac{2}{3}< \dfrac{5}{6}\)