问题 解答题
用自己喜欢的方式计算下面各题(要写出主要的解答过程)
(1)3600-800÷40×35
(2)64-15.8-14.2
(3)(56×
5
7
-27)×
9
13

(4)(
5
12
-
1
6
+
7
18
)×36

(5)18×
9
14
-5×
9
14
+
9
14

(6)38÷[2.5×(4.36+3.64)].
答案

(1)3600-800÷40×35,

=3600-20×35,

=3600-700,

=2900;

(2)64-15.8-14.2,

=64-(15.8+14.2),

=64-30,

=34;

(3)(56×

5
7
-27)×
9
13

=(40-27)×

9
13

=13×

9
13

=9;

(4)(

5
12
-
1
6
+
7
18
)×36,

=

5
12
×36-
1
6
×36+
7
18
×36,

=15-6+14,

=9+14,

=23;

(5)18×

9
14
-5×
9
14
+
9
14

=(18-5+1)×

9
14

=14×

9
14

=9;

(6)38÷[2.5×(4.36+3.64)],

=38÷[2.5×8],

=38÷20,

=1.9.

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