题目内容

计算:
(1)24÷(
1
2
-
1
3
+
1
4
-
1
6
)

(2)[1.25÷
1
8
-(3
1
15
+2.45)]×0.48

(3)2006÷2006
2006
2007
+1÷2008

(4)1÷(
1
2×3
+
1
3×4
+
1
4×5
+
1
5×6
)

(5)
(8
1
4
-0.75)÷3
1
2
(5-4
2
5
)÷10
+
(3.25-1
7
8
)×1
3
5
(2-1
3
8
)÷3
1
8
(1)24÷(
1
2
-
1
3
+
1
4
-
1
6
)

=24÷
1
4

=96;

(2)[1.25÷
1
8
-(3
1
15
+2.45)]×0.48

=[1.25÷0.125-(3
1
15
+2
9
20
)]×0.48,
=[10-5
31
60
12
25

=
269
60
×
12
25

=
269
125


(3)2006÷2006
2006
2007
+1÷2008

=2006÷
2007×2006+2006
2007
+
1
2008

=2006×
2007
(2007+1)×2006
+
1
2008

=2006×
2007
2008×2006
+
1
2008

=
2007
2008
+
1
2008

=1;

(4)1÷(
1
2×3
+
1
3×4
+
1
4×5
+
1
5×6
)

=1÷(
1
2
-
1
3
+
1
3
-
1
4
+
1
4
-
1
5
+
1
5
-
1
6
),
=1÷
1
3

=3;

(5)
(8
1
4
-0.75)÷3
1
2
(5-4
2
5
)÷10
+
(3.25-1
7
8
)×1
3
5
(2-1
3
8
)÷3
1
8

=
(8.25-0.75)÷3.5
(5-4.4)÷10
+
(3.25-1.875)×1.6
(2-1.375)÷3.125

=
7.5÷3.5
0.6÷10
+
1.625×1.6
0.625÷3.125

=
15
7
÷
3
20
+
2.6
0.2

=
100
7
+13,
=14
2
7
+13,
=21
2
7
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