题目内容

神机妙算细又巧.(能用简便方法的用简便方法计算)
18÷(
1
2
-
1
3
)                
(0.75-
3
16
)×(
2
9
+
1
3
)           
2-
6
13
÷
9
26
+
2
3
7
10
×
4
9
+
4
9
×
2
10
3
5
÷[(
1
5
+
1
3
)÷
2
9
]
2
3
-
1
2
+
1
6
)÷
1
48
(1)18÷(
1
2
-
1
3
),
=18÷
1
6

=18×6,
=108;

(2)(0.75-
3
16
)×(
2
9
+
1
3
),
=(
3
4
-
3
16
)×(
2
9
+
1
3
),
=
9
16
×
5
9

=
5
16


(3)2-
6
13
÷
9
26
+
2
3

=2-
6
13
×
26
9
+
2
3

=2-
4
3
+
2
3

=2-(
4
3
-
2
3
),
=2-
2
3

=1
1
3


(4)
7
10
×
4
9
+
4
9
×
2
10

=(
7
10
+
2
10
)×
4
9

=
9
10
×
4
9

=
2
5


(5)
3
5
÷[(
1
5
+
1
3
)÷
2
9
]
=
3
5
÷[
8
15
÷
2
9
],
=
3
5
÷[
8
15
×
9
2
],
=
3
5
÷
12
5

=
3
5
×
5
12

=
1
4


(6)(
2
3
-
1
2
+
1
6
)÷
1
48

=(
2
3
-
1
2
+
1
6
)×48,
=
2
3
×48-
1
2
×48+
1
6
×48,
=32-24+8,
=16.
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