Kerro seuraavat murtoluvut vaiheittain keskenään. Supista vastaus, jos mahdollista.

a. [[$\dfrac{1}{2}$]] · [[$\dfrac{2}{5}$]] = = (? =

b. [[$\dfrac{1}{2}$]] · [[$\dfrac{4}{5}$]] = = (? =

c. [[$\dfrac{1}{2}$]] · [[$\dfrac{2}{5}$]] = = (? =

d. [[$\dfrac{2}{3}$]] · [[$\dfrac{3}{6}$]] = = (? =

e. [[$\dfrac{3}{4}$]] · [[$\dfrac{2}{5}$]] = = (? =

f. [[$\dfrac{1}{5}$]] · [[$\dfrac{5}{6}$]] = = (? =