Question

Efetuar as multiplicações indicadas, usando a tecnica do cancelamento quando possivel.
a) 1/3 x 4/7
b) 7/8 x 3/2
c) 3/5 x 5/9
d) 2/7 x 11/2
e) 9/8 x 4/45
f) 4/45 x 9/8
g) 45/4 x 8/9
h) 8/9 x 45/4

Answer 1

A)4/21
b)21/16
c)15/45=1/3
d)22/14=11/7
e)40/360=1/9
f)360/40=9
g)360/36=10
h)360/36=10

Answer 2

a) 1/3 x 4/7 =    4/21
b) 7/8 x 3/2= 21/16
c) 3/5 x 5/9= 1/3
d) 2/7 x 11/2= 11/7
e) 9/8 x 4/45= 1/10
f) 4/45 x 9/8= 1/10
g) 45/4 x 8/9= 10
h) 8/9 x 45/4 = 10