问题 解答题
化简比:
0.2:4         16米:12厘米    76:19      
1
2
3
4
      
4
5
8
15
答案

0.2:4,

=(0.2×5):(4×5),

=1:20;

16米:12厘米,

=1600厘米:12厘米,

=1600:12,

=(1600÷4):(12÷4),

=400:3;

76:19,

=(76÷19):(19÷19),

=4:1;

1
2
3
4

=(

1
2
×4):(
3
4
×4),

=2:3;

4
5
8
15

=(

4
5
×
15
4
):(
8
15
×
15
4
),

=3:2.

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