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计算(能简算的要简算)(1)17×(1927×7)(2)72×59-14(3)4-512×412(4)13×56+13×12.

题目详情
计算(能简算的要简算)
(1)
1
7
×(
19
27
×7)
(2)72×
5
9
-
1
4

(3)4-
5
12
×
4
12

(4)
1
3
×
5
6
+
1
3
×
1
2

1
7
×(
19
27
×7)
(2)72×
5
9
-
1
4

(3)4-
5
12
×
4
12

(4)
1
3
×
5
6
+
1
3
×
1
2
1
7
1177
19
27
×7)
(2)72×
5
9
-
1
4

(3)4-
5
12
×
4
12

(4)
1
3
×
5
6
+
1
3
×
1
2
19
27
19192727
5
9
-
1
4

(3)4-
5
12
×
4
12

(4)
1
3
×
5
6
+
1
3
×
1
2
5
9
5599
1
4

(3)4-
5
12
×
4
12

(4)
1
3
×
5
6
+
1
3
×
1
2
1
4
1144
5
12
×
4
12

(4)
1
3
×
5
6
+
1
3
×
1
2
5
12
551212
4
12

(4)
1
3
×
5
6
+
1
3
×
1
2
4
12
441212
1
3
×
5
6
+
1
3
×
1
2
1
3
1133
5
6
+
1
3
×
1
2
5
6
5566
1
3
×
1
2
1
3
1133
1
2
1
2
1122
▼优质解答
答案和解析
(1)
1
7
×(
19
27
×7),
=(
1
7
×7)×
19
27

=
19
27


(2)72×
5
9
-
1
4

=40-
1
4

=39
3
4


(3)4-
5
12
×
4
12

=4-
5
36

=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
1
7
111777×(
19
27
×7),
=(
1
7
×7)×
19
27

=
19
27


(2)72×
5
9
-
1
4

=40-
1
4

=39
3
4


(3)4-
5
12
×
4
12

=4-
5
36

=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
19
27
191919272727×7),
=(
1
7
×7)×
19
27

=
19
27


(2)72×
5
9
-
1
4

=40-
1
4

=39
3
4


(3)4-
5
12
×
4
12

=4-
5
36

=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
1
7
111777×7)×
19
27

=
19
27


(2)72×
5
9
-
1
4

=40-
1
4

=39
3
4


(3)4-
5
12
×
4
12

=4-
5
36

=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
19
27
191919272727,
=
19
27


(2)72×
5
9
-
1
4

=40-
1
4

=39
3
4


(3)4-
5
12
×
4
12

=4-
5
36

=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
19
27
191919272727;

(2)72×
5
9
-
1
4

=40-
1
4

=39
3
4


(3)4-
5
12
×
4
12

=4-
5
36

=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
5
9
555999-
1
4

=40-
1
4

=39
3
4


(3)4-
5
12
×
4
12

=4-
5
36

=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
1
4
111444,
=40-
1
4

=39
3
4


(3)4-
5
12
×
4
12

=4-
5
36

=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
1
4
111444,
=39
3
4


(3)4-
5
12
×
4
12

=4-
5
36

=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
3
4
333444;

(3)4-
5
12
×
4
12

=4-
5
36

=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
5
12
555121212×
4
12

=4-
5
36

=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
4
12
444121212,
=4-
5
36

=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
5
36
555363636,
=3
31
36


(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
31
36
313131363636;

(4)
1
3
×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
1
3
111333×
5
6
+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
5
6
555666+
1
3
×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
1
3
111333×
1
2

=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
1
2
111222,
=
1
3
×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
1
3
111333×(
5
6
+
1
2
),
=
1
3
×
4
3

=
4
9
5
6
555666+
1
2
),
=
1
3
×
4
3

=
4
9
1
2
111222),
=
1
3
×
4
3

=
4
9
1
3
111333×
4
3

=
4
9
4
3
444333,
=
4
9
4
9
444999.