问题 解答题
化简比.
56:32=
1.8:0.09=
2
46
=
1
3
2
5
=
4.6:6.9=
3
8
:0.25=
答案

(1)56:32

=(56÷8):(32÷8)

=7:4;

(2)1.8:0.09

=(1.8×100):(0.09×100)

=180:9

=(180÷9):(9÷9)

=20:1;

(3)

2
46
=
(2÷2)
(46÷2)
=
1
23

(4)

1
3
2
5

=(

1
3
×15):(
2
5
×15)

=5:6;

(5)4.6:6.9

=(4.6×10):(6.9×10)

=46:69

=(46÷23):(69÷23)

=2:3;

(6)

3
8
:0.25

=

3
8
1
4

=(

3
8
×8):(
1
4
×8)

=3:2.

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