Question

sắp xếp theo thứ tự từ bé đến lớn

1/2 , 2/5 , 5/8 , 3/10

Answer 1

\(\dfrac{1}{2}=\dfrac{20}{40},\dfrac{2}{5}=\dfrac{16}{40},\dfrac{5}{8}=\dfrac{25}{40},\dfrac{3}{10}=\dfrac{12}{40}\)

vì \(\dfrac{12}{40}< \dfrac{16}{40}< \dfrac{20}{40}< \dfrac{25}{40}=>\dfrac{3}{10}< \dfrac{2}{5}< \dfrac{1}{2}< \dfrac{5}{8}\)