问题 解答题
化简下列各比.
1
8
3
4

2.4:0.42
10.2:17.
答案

(1)

1
8
3
4

=(

1
8
×8):(
3
4
×
8),

=1:6;

(2)2.4:0.42,

=(2.4×

50
3
):(0.42×
50
3
),

=40:7;

(3)10.2:17,

=(10.2×5):(17×5),

=51:85,

=(51÷17):(85÷17),

=3:5.

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