问题 解答题
化简下面各比
63:54
6:2.4
108
72
7
8
5
6
答案

(1)63:54,

=(63÷9):(54÷9),

=7:6;

63:54,

=63÷54,

=

7
6

(2)6:2.4,

=(6÷1.2):(2.4÷1.2),

=5:2;

6:2.4,

=6÷2.4,

=2.5;

(3)

108
72
=108:72,

=(108÷36):(72÷36),

=3:2;

108
72
=108÷72=
3
2

(4)

7
8
5
6

=(

7
8
×24):(
5
6
×24),

=21:20;

7
8
5
6

=

7
8
÷
5
6

=

7
8
×
6
5

=

21
20

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