Question

Chuyển các hỗn số thành phân số rồi thực hiện phép tính

 

\(2\dfrac{3}{5}\) \(+\) \(3\dfrac{2}{3}\) \(=\) 

 

\(4\dfrac{1}{2}-2\dfrac{2}{3}\) \(=\) 

 

\(1\dfrac{3}{4}\) x \(2\dfrac{2}{3}\) \(=\) 

 

\(2\dfrac{3}{4}:1\dfrac{1}{3}=\)

Answer 1

\(2\dfrac{3}{5}+3\dfrac{2}{3}=\dfrac{13}{5}+\dfrac{11}{3}=\dfrac{39}{15}+\dfrac{55}{15}=\dfrac{94}{15}\)

\(4\dfrac{1}{2}-2\dfrac{2}{3}=\dfrac{9}{2}-\dfrac{8}{3}=\dfrac{27}{6}-\dfrac{16}{6}=\dfrac{11}{6}\)

\(1\dfrac{3}{4}\times2\dfrac{2}{3}=\dfrac{7}{4}\times\dfrac{8}{3}=\dfrac{56}{12}=\dfrac{14}{3}\)

\(2\dfrac{3}{4}:1\dfrac{1}{3}=\dfrac{11}{4}:\dfrac{4}{3}=\dfrac{11}{4}\times\dfrac{3}{4}=\dfrac{33}{16}\)