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 .