题目内容

20.6-(6.6+
1
8
÷12.5%)
1
3
÷[
4
7
×(60%-25%)]
36÷[(
2
3
-
2
5
)÷
3
5
]
60×[(
2
3
+
2
5
÷
3
5
]
1÷(
1
10
×
10
9
)×
4
9

3
10
÷5+
1
5
×
7
10
(1)20.6-(6.6+
1
8
÷12.5%)
=20.6-(6.60+0.125÷0.125)
=20.6-(6.6+1)
=20.6-7.6
=13;

(2)
1
3
÷[
4
7
×(60%-25%)]
=
1
3
÷[
4
7
×35%]
=
1
3
÷
1
5

=1
2
3


(3)36÷[(
2
3
-
2
5
)÷
3
5
]
=36÷[
4
15
÷
3
5
]
=36÷
4
9

=81;

(4)60×[(
2
3
+
2
5
÷
3
5
]
=60×[
16
15
÷
3
5
]
=60×
16
9

=106
2
3


(5)1÷(
1
10
×
10
9
)×
4
9

=1÷
1
9
×
4
9

=9×
4
9

=4;

(6)
3
10
÷5+
1
5
×
7
10

=
3
50
+
7
50

=
1
5
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