Question

1) Efetue as multiplicações simplificando-as:
a) ½ x3/8 =
b) 4/7 x 3/5 =
c) 5/3 x 3/7 =
d) 3/7 x 2/5 =
e) 1/8 x 3/9 =
f) 7/5 x 1/3 =
g) 3/5 x ½ =
h) 5/8 x 3/2 =
i) 2/3 x 5/6 =
j) 3/5 x 8/7 =
k) 3/7 x 4/2 =
l) 3/10 x 4/9 =
m) 2/3 x ¼ x 4/2 =
n) 3/7 x ½ x 2/3 =
2) Efetue as multiplicações simplificando-as:
a) 4/5 x ½ x 2/5 =
b) 2/5 x ¾ x 5/3 =
c) ½ x 5/7 x 1/5 =
d) 3/2 x 5/8 x ¼ =
e) 5/4 x 2/3 x 4/7 =
3) Efetue as multiplicações simplificando-as:
a) 2 x 5/6 =

b) 3 x 2/7 =
c) 1/8 x 1/5 =
d) 6/7 x 1/3 =
e) 1/2 x 2/3 x 1/7 =
f) 2/5 x 1/3 x 4/8 =
g) 1/5 x 2/3 x 3/7 =
h) 7/5 x 3/2 x3/4 =
i) 8/5 x 2/3 =
j) 5/9 x 1/6 =

Answer 1

Resposta:

1a) 3/16

b) 12/35

c) 15/21=5/7

d) 6/35

e) 3/72

f) 7/15

g) 3/10

h) 15/16

i) 10/18=5/9

j) 24/35

k) 12/14=6/7

l) 12/90=6/45=2/15

m) 8/24=4/12=2/6=1/3

n) 6/42=3/21=1/7

2a) 8/50=4/25

b) 30/60=3/6=1/2

c) 5/70=1/14

d) 15/64

e) 40/84=20/42=10/21

3a) 10/6=5/3

b) 6/7

c) 1/40

d) 6/21=3/7

e) 2/42=1/21

f) 8/120=4/60=2/30=1/15

g) 6/105=3/35

h) 63/40

i) 16/15

j) 5/54