Question

Answer 1

Bài 6 :

a. 257 x 308 = 79 156 ; 6768 : 82 = 82

b. \(\dfrac{9}{11}\) - \(\dfrac{9}{11}\) : \(\dfrac{3}{2}\) = ( \(\dfrac{9}{11}\) - \(\dfrac{9}{11}\) ) x \(\dfrac{2}{3}\) = 1 x \(\dfrac{2}{3}\) = \(\dfrac{2}{3}\)

Answer 2

\(a.257\times308=79156;6768:82=82\\ b.\dfrac{9}{11}-\dfrac{9}{11}:\dfrac{3}{2}=\dfrac{9}{11}\times1-\dfrac{9}{11}\times\dfrac{2}{3}=\dfrac{9}{11}\times\left(1-\dfrac{2}{3}\right)=\dfrac{9}{11}\times\dfrac{1}{3}=\dfrac{3}{11}\)