Question

Rút gọn phân số rồi so sánh qua các phân số tối giản:

a)  So sánh  \(\frac{14}{35}\);   \(\frac{18}{45}\);  \(\frac{24}{60}\)

RGPS:

\(\frac{14}{35}\)=                                                                \(\frac{18}{45}\)=                                                                    \(\frac{24}{60}\)=

Vậy : ..........................................................................

 

b)  So sánh  \(\frac{45}{65}\);  \(\frac{48}{52}\);  \(\frac{1010}{1313}\)

RGPS:

\(\frac{45}{65}\)=                                                                    \(\frac{48}{52}\)=                                                                     \(\frac{1010}{1313}\)=

Vậy : ............................................................................

Answer 1

a) Rút gọn phân số: \(\frac{14}{35}=\frac{14:7}{35:7}=\frac{2}{5};\frac{18}{45}=\frac{18:9}{45:9}=\frac{2}{5};\frac{24}{60}=\frac{24:12}{60:12}=\frac{2}{5}\)

Vậy, \(\frac{14}{35}=\frac{18}{45}=\frac{24}{60}\)

b) Rút gọn phân số:  \(\frac{45}{65}=\frac{45:5}{65:5}=\frac{9}{13};\frac{48}{52}=\frac{48:4}{52:4}=\frac{12}{13};\frac{1010}{1313}=\frac{1010:101}{1313:101}=\frac{10}{13}\)

Vậy, \(\frac{45}{65}< \frac{1010}{1313}< \frac{48}{52}\)

Answer 2

\(\frac{14}{35}=\frac{2}{5}\);\(\frac{18}{45}=\frac{2}{5}\);\(\frac{24}{60}=\frac{2}{5}\)

\(\Leftrightarrow\frac{2}{5}=\frac{2}{5}=\frac{2}{5}\)

vậy\(\frac{14}{35}=\frac{18}{45}=\frac{24}{60}\)

b)\(\frac{45}{65}=\frac{9}{13};\frac{48}{52}=\frac{12}{13};\frac{1010}{1313}=\frac{10}{13}\)

\(\Leftrightarrow\frac{9}{13}< \frac{12}{13}>\frac{10}{13}\)

vậy \(\frac{45}{65}< \frac{48}{52}>\frac{1010}{1313}\)