Brøk – multiplikasjon 1: Spor II – fasit

$\frac{1}{2}$ liter = 5 desiliter.

$5\cdot\frac{3}{4}=\frac{15}{4}=3\frac{3}{4}$ liter eller 37,5 desiliter.

a) De har solgt 400 billetter.

b) Det er 300 voksenbilletter.

c) Det er 100 barnebilletter.

a) $\frac{5}{7}\cdot\frac{3}{5}=\frac{15}{35}=\frac{3}{7}$	b) $\frac{2}{7}\cdot\frac{1}{3}=\frac{2}{21}$	c) $\frac{4}{9}\cdot\frac{2}{3}=\frac{8}{27}$
d) $\frac{3}{8}\cdot\frac{8}{3}=\frac{24}{24}=1$	e) $\frac{6}{7}\cdot\frac{8}{5}=\frac{48}{35}=1\frac{13}{35}$	f) $\frac{9}{4}\cdot\frac{8}{3}=\frac{72}{12}=6$