Question

So sánh hai phân số: 

3/4 và 5/10. Mn viết các bước hộ mik nha!

 

 

Answer 1

\(MSC:40\\ \dfrac{3}{4}=\dfrac{3\times10}{4\times10}=\dfrac{30}{40};\dfrac{5}{10}=\dfrac{5\times4}{10\times4}=\dfrac{20}{40}\\ 30>20\\ \Rightarrow\dfrac{3}{4}>\dfrac{5}{10}\)

Answer 2

5/10=1/2

1/2=2/4

=>5/10=2/4

mà 2/4<3/4

nên 3/4>5/10

Answer 3

\(\dfrac{3}{4}=\dfrac{3\times5}{4\times5}=\dfrac{15}{20}\)

\(\dfrac{5}{10}=\dfrac{5\times2}{10\times2}=\dfrac{10}{20}\)

Vậy : \(\dfrac{15}{20}>\dfrac{10}{20}hay\dfrac{3}{4}>\dfrac{5}{10}\)