- Ôn tập: Phép cộng, phép trừ hai phân số (có lời...

A \(\frac{3}{7}\)  

B \(\frac{3}{{14}}\)

C \(\frac{2}{{49}}\)  

D \(\frac{3}{{49}}\)  

A \(\frac{4}{0}\)

B \(4\)  

C \(\frac{4}{5}\)

D \(\frac{4}{{15}}\)

A \(\frac{3}{8}\)

B \(\frac{1}{4}\)

C \(\frac{{13}}{{15}}\)

D \(\frac{2}{{15}}\)    

A \(1\)  

B \(\frac{{12}}{{20}}\)

C \(\frac{3}{4}\)  

D \(\frac{3}{5}\)  

A  \(\frac{{18}}{{25}}\)           

B \(\frac{{59}}{{25}}\)

C \(\frac{9}{{27}}\)

D \(\frac{{11}}{{25}}\)  

A \(\frac{5}{7}\)  

B \(\frac{{77}}{{42}}\)

C \(\frac{{37}}{{14}}\)

D \(\frac{{47}}{{14}}\)

A \(\frac{{55}}{{24}}\)

B \(\frac{{19}}{{24}}\)  

C \(\frac{5}{8}\)

D \(\frac{7}{8}\)  

A \(\frac{3}{{10}}m\)

B \(\frac{{11}}{{10}}m\)  

C \(\frac{{11}}{5}m\)

D \(\frac{{21}}{{10}}m\)  

A \(a)\frac{7}{9}\)                          \(b)\frac{{36}}{{35}}\)                          \(c)\frac{1}{{15}}\)                              \(d)\frac{{37}}{7}\)                  \(e)\frac{4}{3}\)                          \(f)\frac{{22}}{{15}}\)

B \(a)\frac{8}{9}\)                          \(b)\frac{{36}}{{35}}\)                          \(c)\frac{1}{{14}}\)                              \(d)\frac{{37}}{7}\)                  \(e)\frac{4}{3}\)                          \(f)\frac{{22}}{{14}}\)

C \(a)\frac{7}{9}\)                          \(b)\frac{{34}}{{35}}\)                          \(c)\frac{1}{{15}}\)                              \(d)\frac{{38}}{7}\)                  \(e)\frac{4}{3}\)                          \(f)\frac{{23}}{{15}}\)

D \(a)\frac{2}{9}\)                          \(b)\frac{{36}}{{35}}\)                          \(c)\frac{1}{{13}}\)                              \(d)\frac{{37}}{7}\)                  \(e)\frac{4}{7}\)                          \(f)\frac{{22}}{{15}}\)

A a)\(\frac{3}{{57}}\)              b)\(\frac{{38}}{{45}}\)

c)\(\frac{9}{{22}}\)              d)\(\frac{{19}}{{20}}\)

B a)\(\frac{3}{{56}}\)                b)\(\frac{{38}}{{45}}\)

c)\(\frac{9}{{20}}\)                d)\(\frac{{17}}{{20}}\)

C a)\(\frac{1}{{56}}\)                 b)\(\frac{{38}}{{45}}\)

c)\(\frac{9}{{25}}\)                 d)\(\frac{{17}}{{20}}\)

D a)\(\frac{3}{{56}}\)                  b)\(\frac{{34}}{{45}}\)

c)\(\frac{9}{{20}}\)                   d)\(\frac{{13}}{{20}}\)

A a) \(\frac{3}{4} - \frac{1}{2} > \frac{1}{6}\)

b) \(\frac{3}{8} + \frac{2}{5}\,\,\, > \,\,\,\frac{1}{4} + \frac{9}{{20}}\)

c) \(\frac{5}{4} + \frac{1}{2} - 1\,\,\,\, > \,\,\,\,\frac{3}{4} - \frac{2}{{15}} + \frac{9}{{30}}\,\)

B a) \(\frac{3}{4} - \frac{1}{2} > \frac{1}{6}\)

b) \(\frac{3}{8} + \frac{2}{5}\,\,\, < \,\,\,\frac{1}{4} + \frac{9}{{20}}\)

c) \(\frac{5}{4} + \frac{1}{2} - 1\,\,\,\, < \,\,\,\,\frac{3}{4} - \frac{2}{{15}} + \frac{9}{{30}}\,\)

C a) \(\frac{3}{4} - \frac{1}{2} > \frac{1}{6}\)

b) \(\frac{3}{8} + \frac{2}{5}\,\,\, > \,\,\,\frac{1}{4} + \frac{9}{{20}}\)

c) \(\frac{5}{4} + \frac{1}{2} - 1\,\,\,\, < \,\,\,\,\frac{3}{4} - \frac{2}{{15}} + \frac{9}{{30}}\,\)

D a) \(\frac{3}{4} - \frac{1}{2} < \frac{1}{6}\)

b) \(\frac{3}{8} + \frac{2}{5}\,\,\, > \,\,\,\frac{1}{4} + \frac{9}{{20}}\)

c) \(\frac{5}{4} + \frac{1}{2} - 1\,\,\,\, < \,\,\,\,\frac{3}{4} - \frac{2}{{15}} + \frac{9}{{30}}\,\)

A \(\frac{1}{{24}}\) bể nước.

B \(\frac{7}{{24}}\) bể nước.

C \(\frac{11}{{24}}\) bể nước.

D \(\frac{5}{{24}}\) bể nước.

A \(\frac{9}{2}\)

B \(\frac{7}{2}\)

C \(\frac{5}{2}\)

D \(\frac{3}{2}\)