(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 .