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脱式计算(能简便的要用简便方法计算)(1)16+15+13(2)712+16-14(3)811+715-815(4)7-(34−15)(5)45−(415+13)(6)47+521−47+221.

题目详情
脱式计算(能简便的要用简便方法计算)
(1)
1
6
+
1
5
+
1
3
(2)
7
12
+
1
6
-
1
4
(3)
8
11
+
7
15
-
8
15
(4)7-(
3
4
1
5
)
(5)
4
5
−(
4
15
+
1
3
)
(6)
4
7
+
5
21
4
7
+
2
21
(1)
1
6
+
1
5
+
1
3
(2)
7
12
+
1
6
-
1
4
(3)
8
11
+
7
15
-
8
15
(4)7-(
3
4
1
5
)
(5)
4
5
−(
4
15
+
1
3
)
(6)
4
7
+
5
21
4
7
+
2
21
(1)
1
6
+
1
5
+
1
3
(2)
7
12
+
1
6
-
1
4
(3)
8
11
+
7
15
-
8
15
(1)
1
6
+
1
5
+
1
3
1
6
+
1
5
+
1
3
1
6
1166
1
5
+
1
3
1
5
1155
1
3
1
3
1133(2)
7
12
+
1
6
-
1
4
7
12
+
1
6
-
1
4
7
12
771212
1
6
-
1
4
1
6
1166
1
4
1
4
1144(3)
8
11
+
7
15
-
8
15
8
11
+
7
15
-
8
15
8
11
881111
7
15
-
8
15
7
15
771515
8
15
8
15
881515 (4)7-(
3
4
1
5
)
(5)
4
5
−(
4
15
+
1
3
)
(6)
4
7
+
5
21
4
7
+
2
21
(4)7-(
3
4
1
5
)
3
4
1
5
)
3
4
3344
1
5
1155(5)
4
5
−(
4
15
+
1
3
)
4
5
−(
4
15
+
1
3
)
4
5
4455
4
15
441515
1
3
1133(6)
4
7
+
5
21
4
7
+
2
21
4
7
+
5
21
4
7
+
2
21
4
7
4477
5
21
552121
4
7
4477
2
21
222121
▼优质解答
答案和解析
(1)
1
6
+
1
5
+
1
3

=
11
30
+
1
3

=
7
10


(2)
7
12
+
1
6
-
1
4

=
3
4
+
1
4

=1;

(3)
8
11
+
7
15
-
8
15

=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
1
6
111666+
1
5
+
1
3

=
11
30
+
1
3

=
7
10


(2)
7
12
+
1
6
-
1
4

=
3
4
+
1
4

=1;

(3)
8
11
+
7
15
-
8
15

=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
1
5
111555+
1
3

=
11
30
+
1
3

=
7
10


(2)
7
12
+
1
6
-
1
4

=
3
4
+
1
4

=1;

(3)
8
11
+
7
15
-
8
15

=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
1
3
111333,
=
11
30
+
1
3

=
7
10


(2)
7
12
+
1
6
-
1
4

=
3
4
+
1
4

=1;

(3)
8
11
+
7
15
-
8
15

=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
11
30
111111303030+
1
3
111333,
=
7
10


(2)
7
12
+
1
6
-
1
4

=
3
4
+
1
4

=1;

(3)
8
11
+
7
15
-
8
15

=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
7
10
777101010;

(2)
7
12
+
1
6
-
1
4

=
3
4
+
1
4

=1;

(3)
8
11
+
7
15
-
8
15

=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
7
12
777121212+
1
6
-
1
4

=
3
4
+
1
4

=1;

(3)
8
11
+
7
15
-
8
15

=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
1
6
111666-
1
4

=
3
4
+
1
4

=1;

(3)
8
11
+
7
15
-
8
15

=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
1
4
111444,
=
3
4
+
1
4

=1;

(3)
8
11
+
7
15
-
8
15

=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
3
4
333444+
1
4
111444,
=1;

(3)
8
11
+
7
15
-
8
15

=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
8
11
888111111+
7
15
-
8
15

=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
7
15
777151515-
8
15

=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
8
15
888151515,
=
8
11
1
15

=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
8
11
888111111−
1
15
111151515,
=
109
165


(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
109
165
109109109165165165;

(4)7-(
3
4
1
5
),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
3
4
333444−
1
5
111555),
=7-
11
20

=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
11
20
111111202020,
=6
9
20


(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
9
20
999202020;

(5)
4
5
−(
4
15
+
1
3
),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
4
5
444555−(
4
15
444151515+
1
3
111333),
=
4
5
9
15

=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
4
5
444555−
9
15
999151515,
=
1
5


(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
1
5
111555;

(6)
4
7
+
5
21
4
7
+
2
21

=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
4
7
444777+
5
21
555212121−
4
7
444777+
2
21
222212121,
=(
4
7
4
7
)+(
5
21
+
2
21
),
=0+
4
7
444777−
4
7
444777)+(
5
21
+
2
21
),
=0+
5
21
555212121+
2
21
222212121),
=0+