问题 解答题
化简比.
63:27
3
8
3
4
0.63:0.07
3
5
千米:240米
答案

63:27,

=(63÷9):(27÷9),

=7:3,

3
8
3
4

=(

3
8
×
8
3
):(
3
4
×
8
3
),

=1:2;

0.63:0.07,

=(0.63×100):(0.07×100),

=63:7,

=(63÷7):(7÷7),

=9:1;

3
5
千米:240米,

=600米:240米,

=600:240,

=(600÷120):(240÷120),

=5:2.

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