题目内容

递等式计算.
(1)
7
13
×
3
4
+
3
4
×
6
13
(2)
3
7
÷
7
11
+
4
7
÷
7
11
(3)
12
7
÷(
2
3
-
1
4
)
(4)
5
9
+
5
9
÷
5
3
(5)
16
5
×
1
2
÷
2
5
(6)36×(
7
9
+
5
6
)÷
29
5
(7)
1
8
×56×
2
7
(8)7×30%(9)
1
6
×6%
(10)12×(
1
2
+
3
4
)
(11)4÷4%
(1)
7
13
×
3
4
+
3
4
×
6
13
,
=
3
4
×
(
7
13
+
6
13
),
=
3
4
×
1,
=
3
4
;

(2)
3
7
÷
7
11
+
4
7
÷
7
11
,
=(
3
7
+
4
7
)×
7
11
,
=1×
7
11
,
=
7
11
;

(3)
12
7
÷(
2
3
-
1
4
),
=
12
7
÷
5
12
,
=4
4
35
;

(4)
5
9
+
5
9
÷
5
3
,
=
5
9
+
3
9
,
=
8
9
;

(5)
16
5
×
1
2
÷
2
5
,
=
8
5
÷
2
5
,
=4;

(6)36×(
7
9
+
5
6
)÷
29
5
,
=(36×
7
9
+36×
5
6
)÷
29
5
,
=(28+30)÷
29
5
,
=58÷
29
5
,
=10;

(7)
1
8
×56×
2
7
,
=(
1
8
×
8)×(7×
2
7
),
=1×2,
=2;

(8)7×30%=2.1;

(9)
1
6
×6%=0.01;

(10)12×(
1
2
+
3
4
),
=12×
1
2
+12×
3
4
,
=6+9,
=15;

(11)4÷4%=100.
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