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511÷6+16×611(314+521)×42(712-14)÷13+167.25×20%+2.75×20%45×38+56÷5123.57×[27÷(2.6-35)].

题目详情
5
11
÷6+
1
6
×
6
11
3
14
+
5
21
)×42
7
12
-
1
4
)÷
1
3
+
1
6
7.25×20%+2.75×20%
4
5
×
3
8
+
5
6
÷
5
12
3.57×[
2
7
÷(2.6-
3
5
)].
▼优质解答
答案和解析
(1)
5
11
÷6+
1
6
×
6
11

=
5
11
×
1
6
+
1
6
×
6
11

=(
5
11
+
6
11
)×
1
6

=1×
1
6

=
6
11


(2)(
3
14
+
5
21
)×42,
=
3
14
×42+
5
21
×42,
=9+10,
=19;

(3)(
7
12
-
1
4
)÷
1
3
+
1
6

=
1
3
÷
1
3
+
1
6

=1+
1
6

=1
1
6


(4)7.25×20%+2.75×20%,
=(7.25+2.75)×20%,
=10×20%,
=2;

(5)
4
5
×
3
8
+
5
6
÷
5
12

=
3
10
+2,
=2
作业帮用户 2017-10-01