问题 解答题
求比值化简比
(1)
1
0.25
(2)3
1
2
:2
1
3
(3)
3
4
千米:500米.
答案

(1)

1
0.25
=
1×4
0.25×4
=4:1;

比值为:

1
0.25
=1÷0.25=4;

(2)3

1
2
:2
1
3

=

7
2
7
3

=(

7
2
×
6
7
):(
7
3
×
6
7
),

=3:2;

比值为:3

1
2
:2
1
3

=

7
2
7
3

=

7
2
÷
7
3

=1.5;

(3)

3
4
千米:500米;

=

3
4
千米:0.5千米;

=(

3
4
×4):(0.5×4),

=3:2;

比值为:

3
4
千米:500米;

=

3
4
千米:0.5千米;

=

3
4
÷0.5;

=1.5.

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