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(2012•北京模拟)(1)3015-3015÷15(2)1314-1315+114-215(3)(1-14+13)÷26(4)6.3÷[(417-0.07×50)÷127].

题目详情

13
14
-
13
15
+
1
14
-
2
15

(3)(1-
1
4
+
1
3
)÷26
(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
].
13
14
13131414
13
15
+
1
14
-
2
15

(3)(1-
1
4
+
1
3
)÷26
(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
].
13
15
13131515
1
14
-
2
15

(3)(1-
1
4
+
1
3
)÷26
(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
].
1
14
111414
2
15

(3)(1-
1
4
+
1
3
)÷26
(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
].
2
15
221515
1
4
+
1
3
)÷26
(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
].
1
4
1144
1
3
)÷26
(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
].
1
3
1133
1
7
-0.07×50)÷1
2
7
].
1
7
1177
2
7
].
2
7
2277
▼优质解答
答案和解析
(1)3015-3015÷15,
=3015-201,
=3015-200-1,
=2815-1,
=2814;

(2)
13
14
-
13
15
+
1
14
-
2
15

=(
13
14
+
1
14
)-(
13
15
+
2
15
),
=1-1,
=0;

(3)(1-
1
4
+
1
3
)÷26,
=(
3
4
+
1
3
)÷26,
=
13
12
÷26,
=
1
24


(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
13
14
131313141414-
13
15
+
1
14
-
2
15

=(
13
14
+
1
14
)-(
13
15
+
2
15
),
=1-1,
=0;

(3)(1-
1
4
+
1
3
)÷26,
=(
3
4
+
1
3
)÷26,
=
13
12
÷26,
=
1
24


(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
13
15
131313151515+
1
14
-
2
15

=(
13
14
+
1
14
)-(
13
15
+
2
15
),
=1-1,
=0;

(3)(1-
1
4
+
1
3
)÷26,
=(
3
4
+
1
3
)÷26,
=
13
12
÷26,
=
1
24


(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
1
14
111141414-
2
15

=(
13
14
+
1
14
)-(
13
15
+
2
15
),
=1-1,
=0;

(3)(1-
1
4
+
1
3
)÷26,
=(
3
4
+
1
3
)÷26,
=
13
12
÷26,
=
1
24


(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
2
15
222151515,
=(
13
14
+
1
14
)-(
13
15
+
2
15
),
=1-1,
=0;

(3)(1-
1
4
+
1
3
)÷26,
=(
3
4
+
1
3
)÷26,
=
13
12
÷26,
=
1
24


(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
13
14
131313141414+
1
14
111141414)-(
13
15
+
2
15
),
=1-1,
=0;

(3)(1-
1
4
+
1
3
)÷26,
=(
3
4
+
1
3
)÷26,
=
13
12
÷26,
=
1
24


(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
13
15
131313151515+
2
15
222151515),
=1-1,
=0;

(3)(1-
1
4
+
1
3
)÷26,
=(
3
4
+
1
3
)÷26,
=
13
12
÷26,
=
1
24


(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
1
4
111444+
1
3
)÷26,
=(
3
4
+
1
3
)÷26,
=
13
12
÷26,
=
1
24


(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
1
3
111333)÷26,
=(
3
4
+
1
3
)÷26,
=
13
12
÷26,
=
1
24


(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
3
4
333444+
1
3
111333)÷26,
=
13
12
÷26,
=
1
24


(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
13
12
131313121212÷26,
=
1
24


(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
1
24
111242424;

(4)6.3÷[(4
1
7
-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
1
7
111777-0.07×50)÷1
2
7
],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
2
7
222777],
=6.3÷[(4
1
7
-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
1
7
111777-3.5)÷1
2
7
],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
2
7
222777],
=6.3÷[
9
14
÷1
2
7
],
=6.3÷
1
2

=12.6.
9
14
999141414÷1
2
7
222777],
=6.3÷
1
2

=12.6.
1
2
111222,
=12.6.