问题 解答题
化简比:2:2.83:5
1
4
99
44
6.24:2.1
5
8
:0.05
2
1
3
3
1
3
答案

(1)2:2.8

=(2×2.5):(2.8×2.5)

=5:7;

(2)3:5

1
4

=(3×

4
3
):(5
1
4
×
4
3

=4:7;

(3)

99
44

=(99÷11):(44÷11)

=9:4;

(4)6.24:2.1

=(6.24×

50
3
):(2.1×
50
3

=104:35;

(5)

5
8
:0.05

=(

5
8
×40):(0.05×40)

=25:2.

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