Question

a) 2\(\dfrac{4}{5}\) x 3\(\dfrac{1}{8}\)

b)1\(\dfrac{1}{5}\) : 1\(\dfrac{4}{5}\)

Answer 1

a) \(2\dfrac{4}{5}\times3\dfrac{1}{8}=\dfrac{14}{5}\times\dfrac{25}{8}=\dfrac{35}{4}\)

b) \(1\dfrac{1}{5}:1\dfrac{4}{5}=\dfrac{6}{5}:\dfrac{9}{5}=\dfrac{6}{5}\times\dfrac{5}{9}=\dfrac{2}{3}\)

Answer 2

a: \(2\dfrac{4}{5}\cdot3\dfrac{1}{8}=\dfrac{14}{5}\cdot\dfrac{25}{8}=5\cdot\dfrac{7}{4}=\dfrac{35}{4}\)

b: \(1\dfrac{1}{5}:1\dfrac{4}{5}=\dfrac{6}{5}:\dfrac{9}{5}=\dfrac{2}{3}\)

Answer 3

115:145=65:95=65×59=23