\(\dfrac{6}{7}+\dfrac{8}{7}=\dfrac{14}{7}=2\)
\(\dfrac{6}{7}+\dfrac{8}{7}=\dfrac{6+8}{7}=\dfrac{14}{7}=2\)
\(\dfrac{6}{7}\) + \(\dfrac{8}{7}\) = \(\dfrac{14}{7}\) = 2
\(\dfrac{6}{7}\) + \(\dfrac{8}{7}\) = \(\dfrac{14}{7}\) = 2
\(\dfrac{6}{7}+\dfrac{8}{7}=\dfrac{14}{7}=2\)
\(\dfrac{6}{7}+\dfrac{8}{7}=\dfrac{6+8}{7}=\dfrac{14}{7}=2\)
\(\dfrac{6}{7}\) + \(\dfrac{8}{7}\) = \(\dfrac{14}{7}\) = 2
\(\dfrac{6}{7}\) + \(\dfrac{8}{7}\) = \(\dfrac{14}{7}\) = 2
a)\(\dfrac{7}{8}\)x\(\dfrac{3}{13}\)+\(\dfrac{4}{9}\)x\(\dfrac{4}{13}\)
b)\(\dfrac{6}{5}\)+\(\dfrac{7}{3}\)+\(\dfrac{8}{9}\)
c)23: \(\dfrac{5}{14}\)+\(\dfrac{6}{7}\)+\(\dfrac{4}{9}\)
d)\(4\dfrac{1}{4}\)+\(7\dfrac{3}{7}\)-\(2\dfrac{4}{17}\)
e)8-(9\(\dfrac{2}{11}\)+\(\dfrac{8}{33}\))
a,\(\dfrac{1}{7}\text{x}\dfrac{2}{7}+\dfrac{1}{7}\text{x}\dfrac{5}{7}+\dfrac{6}{7}\) b,\(\dfrac{6}{11}\text{x}\dfrac{4}{9}+\dfrac{6}{11}\text{x}\dfrac{7}{9}-\dfrac{6}{11}\text{x}\dfrac{2}{9}\)
c, \(\dfrac{4}{25}\text{x}\dfrac{5}{8}\text{x}\dfrac{25}{4}\text{x}24\)
\(\dfrac{1}{3}+\dfrac{2}{3}=\)
\(\dfrac{4}{5}+\dfrac{5}{6}=\)
\(\dfrac{4}{5}-\dfrac{3}{5}=\)
\(\dfrac{9}{8}-\dfrac{4}{2}=\)
\(\dfrac{8}{5}x\dfrac{5}{8}=\)
\(\dfrac{6}{7}x\dfrac{4}{7}=\)
\(\dfrac{4}{5}:\dfrac{4}{5}=\)
\(\dfrac{5}{5}:\dfrac{5}{5}=\)
a,
tìm x
a) \(1\dfrac{1}{2}:x=\dfrac{1}{2}\) b)\(\dfrac{7}{9}-x=\dfrac{2}{3}\) c)\(\dfrac{8}{7}:x=\dfrac{6}{7}\) d)\(\dfrac{9}{5}-x=\dfrac{3}{7}\)
\(\dfrac{8}{7}+\dfrac{6}{7}\)
Bài 2: (Đề1) Tính
\(4\dfrac{2}{3}+3\dfrac{2}{7}\)=..........................
\(8\dfrac{5}{9}:5\dfrac{1}{2}\) =..........................
\(6\dfrac{5}{7}:2\dfrac{1}{6}\) =..........................
\(1\dfrac{3}{4}x2\dfrac{5}{6}\) =..........................
\(5\dfrac{3}{4}-2\) =..........................
so sánh các hỗn số sau:
\(7\dfrac{4}{5}\) và \(9\dfrac{1}{2}\)
\(7\dfrac{1}{6}\) và \(3\dfrac{4}{5}\)
\(9\dfrac{9}{1}\) và \(5\dfrac{8}{6}\)
Tính :
\(A.\dfrac{25}{7}-2+\dfrac{3}{2}\)
\(B.\dfrac{4}{5}x\dfrac{10}{3}:8\)
\(C.\dfrac{7}{3}+\dfrac{2}{5}:\dfrac{1}{6}\)
Bài 6. Đúng ghi Đ sai ghi S vào ô trống:
a, \(\dfrac{7}{9}\)\(>\dfrac{7}{8}\) b, \(\dfrac{3}{5}\)\(< \dfrac{5}{7}\) c, \(\dfrac{111}{112}\)\(=\dfrac{112}{113}\)\(\) d, \(\dfrac{13}{9}\)\(=\dfrac{117}{81}\)