Question

Efetue as multiplicações

a)1/2 x 5/8

b)4/7 x 2/5

c)5/3 x 2/7

d)3/7 x 1/5

e)1/8 x 1/9

f)7/5 x 2/3

g)3/5 x 1/2

h)7/8 x 3/2

Answer 1

A) $<var>\frac{1}{2} . \frac{5}{8} = \frac{5}{16}</var>$

 

B) $<var>\frac{4}{7} . \frac{2}{5} = \frac{8}{35}</var>$

 

C) $<var>\frac{5}{3} . \frac{2}{7} = \frac{10}{21}</var>$

 

D) $<var>\frac{3}{7} . \frac{1}{5} = \frac{3}{35}</var>$

 

E) $<var>\frac{1}{8} . \frac{1}{9} = \frac{1}{72}</var>$

 

F) $<var>\frac{7}{5} . \frac{2}{3} = \frac{14}{15}</var>$

 

G) $<var>\frac{3}{5} . \frac{1}{2} = \frac{3}{10}</var>$

 

H) $<var>\frac{7}{8} . \frac{3}{2} = \frac{21}{16}</var>$

Answer 2

 

a)1/2 x 5/8

 

b)4/7 x 2/5  = 8/35

 

c)5/3 x 2/7 = 10/21

 

d)3/7 x 1/5  = 3/35

 

e)1/8 x 1/9 = 1/72

 

f)7/5 x 2/3 = 14/15

 

g)3/5 x 1/2 = 3/10

 

h)7/8 x 3/2 = 21/16