So sánh phân số 111/332 và 166/499
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Ta có : 1 - 399/400 = 1/400 ; 1 - 499/500 = 1/500 vậy 1/400 > 1/500 lên 399/400 > 499/500
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`#3107.101107`
`a)`
Ta có:
\(\dfrac{2727}{3131}=\dfrac{2727\div27}{3131\div31}=\dfrac{27}{31}\)
Vì \(\dfrac{27}{31}=\dfrac{27}{31}\)
\(\Rightarrow\dfrac{27}{31}=\dfrac{2727}{3131}\)
`b)`
Ta có:
\(\dfrac{11}{31}=1-\dfrac{20}{31}=1-\dfrac{200}{310}\)
\(\dfrac{111}{311}=1-\dfrac{200}{311}\)
Vì \(\dfrac{200}{310}>\dfrac{200}{311}\)
\(\Rightarrow1-\dfrac{200}{310}< 1-\dfrac{200}{311}\)
\(\Rightarrow\dfrac{11}{31}< \dfrac{111}{311}.\)
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\(\frac{111}{115}\)= 1 - \(\frac{4}{115}\)
\(\frac{555}{559}\)= 1 - \(\frac{4}{559}\)
\(\frac{4}{115}\)> \(\frac{4}{559}\)
=> \(\frac{111}{115}\) < \(\frac{555}{559}\)
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![](https://rs.olm.vn/images/avt/0.png?1311)
39/12>116/40
37/90>35/111
23/28<24/27
nha Nguyễn Thùy Linh
Ta có:\(\frac{111}{332}\)>\(\frac{111}{333}\)=\(\frac{1}{3}\)\(\Rightarrow\)\(\frac{111}{332}\)>\(\frac{1}{3}\)
\(\frac{166}{499}\)<\(\frac{166}{498}\)=\(\frac{1}{3}\)\(\Rightarrow\)\(\frac{166}{499}\)<\(\frac{1}{3}\)
\(\Rightarrow\)\(\frac{111}{332}\)>\(\frac{166}{499}\)
Vậy\(\frac{111}{332}\)>\(\frac{166}{499}\)