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选用适当的方法计算.57+56+27+16115×(13+112)13+3÷1214÷(3-513-813)

题目详情
选用适当的方法计算.
5
7
+
5
6
+
2
7
+
1
6

1
15
×(
1
3
+
1
12

1
3
+3÷
1
2

1
4
÷(3-
5
13
-
8
13

5
7
+
5
6
+
2
7
+
1
6

1
15
×(
1
3
+
1
12

1
3
+3÷
1
2

1
4
÷(3-
5
13
-
8
13
5
7
5577
5
6
+
2
7
+
1
6

1
15
×(
1
3
+
1
12

1
3
+3÷
1
2

1
4
÷(3-
5
13
-
8
13
5
6
5566
2
7
+
1
6

1
15
×(
1
3
+
1
12

1
3
+3÷
1
2

1
4
÷(3-
5
13
-
8
13
2
7
2277
1
6

1
15
×(
1
3
+
1
12

1
3
+3÷
1
2

1
4
÷(3-
5
13
-
8
13
1
6
1166
1
15
×(
1
3
+
1
12

1
3
+3÷
1
2

1
4
÷(3-
5
13
-
8
13
1
15
111515
1
3
+
1
12

1
3
+3÷
1
2

1
4
÷(3-
5
13
-
8
13
1
3
1133
1
12

1
3
+3÷
1
2

1
4
÷(3-
5
13
-
8
13
1
12
111212
1
3
+3÷
1
2

1
4
÷(3-
5
13
-
8
13
1
3
1133
1
2

1
4
÷(3-
5
13
-
8
13
1
2
1122
1
4
÷(3-
5
13
-
8
13
1
4
1144
5
13
-
8
13
5
13
551313
8
13
8
13
881313
▼优质解答
答案和解析
(1)
5
7
+
5
6
+
2
7
+
1
6

=(
5
7
+
2
7
)+(
1
6
+
5
6

=1+1
=2;

(2)
1
15
×(
1
3
+
1
12

=
1
15
×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
5
7
555777+
5
6
+
2
7
+
1
6

=(
5
7
+
2
7
)+(
1
6
+
5
6

=1+1
=2;

(2)
1
15
×(
1
3
+
1
12

=
1
15
×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
5
6
555666+
2
7
+
1
6

=(
5
7
+
2
7
)+(
1
6
+
5
6

=1+1
=2;

(2)
1
15
×(
1
3
+
1
12

=
1
15
×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
2
7
222777+
1
6

=(
5
7
+
2
7
)+(
1
6
+
5
6

=1+1
=2;

(2)
1
15
×(
1
3
+
1
12

=
1
15
×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
6
111666
=(
5
7
+
2
7
)+(
1
6
+
5
6

=1+1
=2;

(2)
1
15
×(
1
3
+
1
12

=
1
15
×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
5
7
555777+
2
7
)+(
1
6
+
5
6

=1+1
=2;

(2)
1
15
×(
1
3
+
1
12

=
1
15
×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
2
7
222777)+(
1
6
+
5
6

=1+1
=2;

(2)
1
15
×(
1
3
+
1
12

=
1
15
×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
6
111666+
5
6

=1+1
=2;

(2)
1
15
×(
1
3
+
1
12

=
1
15
×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
5
6
555666)
=1+1
=2;

(2)
1
15
×(
1
3
+
1
12

=
1
15
×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
15
111151515×(
1
3
+
1
12

=
1
15
×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
3
111333+
1
12

=
1
15
×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
12
111121212)
=
1
15
×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
15
111151515×
5
12

=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
5
12
555121212
=
1
36


(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
36
111363636;

(3)
1
3
+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
3
111333+3÷
1
2

=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
2
111222
=
1
3
+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
3
111333+6
=6
1
3


(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
3
111333;

(4)
1
4
÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
4
111444÷(3-
5
13
-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
5
13
555131313-
8
13

=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
8
13
888131313)
=
1
4
÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
4
111444÷[3-(
5
13
+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
5
13
555131313+
8
13
)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
8
13
888131313)]
=
1
4
÷(3-1)
=
1
4
÷2
=
1
8
1
4
111444÷(3-1)
=
1
4
÷2
=
1
8
1
4
111444÷2
=
1
8
1
8
111888.