化简下面各比,并求比值154:77 0.25:2 3 5 : 5 6 5.6:1.12 6 7 :0.6 6厘米:0.8

1个回答

  • (1)154:77

    =(154÷77):(77÷77)

    =2:1

    154:77

    =154÷77

    =2;

    (2)0.25:2

    =(0.25÷0.25):(2÷0.25)

    =1:8

    0.25÷2

    =0.25÷2

    =

    1

    8 ;

    (3)

    3

    5 :

    5

    6

    =(

    3

    5 ×30):(

    5

    6 ×30)

    =18:25

    3

    5 :

    5

    6

    =

    3

    5 ÷

    5

    6

    =

    3

    5 ×

    6

    5

    =

    18

    25 ;

    (4)5.6:1.12

    =(5.6÷1.12):(1.12÷1.12)

    =5:1

    5.6:1.12

    =5.6÷1.12

    =5.

    (5)

    6

    7 :0.6

    =

    6

    7 :

    3

    5

    =(

    6

    7 ×35):(

    3

    5 ×35)

    =30:21

    =(30÷3):(21÷3)

    =10:7

    6

    7 :0.6

    =

    6

    7 ÷

    3

    5

    =

    6

    7 ×

    5

    3

    =

    10

    7 ;

    (6)6厘米:0.8米

    =6厘米:80厘米

    =(6÷2):(80÷2)

    =3:40

    6厘米:0.8米

    =6厘米÷80厘米

    =6÷80

    =

    3

    40 .