问题 解答题
化成最简整数比.
5
7
3
4
0.5:0.250.125:
7
8
3吨:360千克
答案

5
7
3
4

=(

5
7
×28):(
3
4
×28),

=20:21;

0.5:0.25,

=(0.5×100):(0.25×100),

=50:25,

=(50÷25):(25÷25),

=2:1;

0.125:

7
8

=

1
8
7
8

=(

1
8
×8):(
7
8
×8),

=1:7;

3吨:360千克,

=3000千克:360千克;

=3000:360,

=(3000÷120):(360÷120),

=25:3.

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