题目内容

7
8
5
6
1.6
0.04
3
8
:6
4:
1
2
18:27
2
5
3
10
1.6:2.40.625:
3
4
(1)
7
8
5
6

=(
7
8
×24
):(
5
6
×24),
=21:20;
7
8
5
6

=
7
8
÷
5
6

=
7
8
×
6
5

=
21
20


(2)
1.6
0.04

=1.6:0.04,
=(1.6÷0.04):(0.04÷0.04),
=40:1;
1.6
0.04
=40;

(3)
3
8
:6,
=(
3
8
×8
):(6×8),
=3:38,
=(3÷3):(48÷3),
=1:16;
3
8
:6,
=
3
8
÷6,
=
3
8
×
1
6

=
1
16


(4)4:
1
2

=(4×2):(
1
2
×2
),
=8:1;
4:
1
2

=4÷
1
2

=4×2,
=8;

(5)18:27,
=(18÷9):(27÷9),
=2:3;
18:27,
=18÷27,
=
2
3


(6)
2
5
3
10

=(
2
5
×10
):(
3
10
×10
),
=4:3;
2
5
3
10

=
2
5
÷
3
10

=
2
5
×
10
3

=
4
3


(7)1.6:2.4,
=(1.6÷0.8):(2.4÷0.8),
=2:3;
1.6:2.4,
=1.6÷2.4,
=
2
3


(8)0.625:
3
4

=
5
8
3
4

=(
5
8
×8
):(
3
4
×8
),
=5:6;
0.625:
3
4

=
5
8
÷
3
4

=
5
8
×
4
3

=
5
6
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