Question

a. 3/5 x 5 + 12 x 3/5 + 3 : 5/3

b. 3/5 x 45/27 x 135/180

Answer 1

a,3/5.(5+12+1/3)

=3/5.52/3

=52/5

b,=3/5.5/3.3/4

=1.3/4

=3/4

Answer 2

Anh tính thẳng ra luôn nhé.

a. 3/5 x 5 + 12 x 3/5 + 3 : 5/3 = 12

b. 3/5 x 45/27 x 135/180 = 3/4

Answer 3

a. 3/5 x 5 + 12 x 3/5 + 3 : 5/3

= 3/5 x 5 + 12 x 3/5 + 3 x 3/5

= 3/5 x ( 5 + 15 + 3)

= 3/5 x 20

= 12

 

b. 3/5 x 45/27 x 135/180

= 3/5 x 5/3 x 3/4

= 1 x 3/4

= 3/4

Answer 4

12 nhé

Answer 5

 3/5 x 5 + 12 x 3/5 + 3 : 5/3

= 3/5 x 5 + 12 x 3/5 + 3 x 3/5

= 3/5 x ( 5 + 15 + 3)

= 3/5 x 20

= 12

 

b. 3/5 x 45/27 x 135/180

= 3/5 x 5/3 x 3/4