问题 解答题
求比值.
45%:4.5
0.9:0.36
4
7
:1
1
7

1
4
吨:375千克.
答案

(1)45%:4.5,

=0.45:4.5,

=0.45÷4.5,

=0.1;

(2)0.9:0.36,

=0.9÷0.36,

=2.5;

(3)

4
7
:1
1
7

=

4
7
÷
8
7

=

4
7
×
7
8

=

1
2

(4)

1
4
吨:375千克,

=0.25吨:375千克,

=250千克:375千克,

=250÷375,

=

2
3

填空题
单项选择题