问题 解答题
计算.
13
7
8
×
1
16
+6
1
8
÷16
1
3
5
÷
8
35
×
9
14
÷6
3
7

2
2
3
÷[(3
2
7
-1.5)×1.12]+
2
3

(6
2
3
-3.75)÷(4
1
6
+7.5)×0.02.
答案

(1)13

7
8
×
1
16
+6
1
8
÷16,

=13

7
8
×
1
16
+6
1
8
×
1
16

=(13

7
8
+6
1
8
)×
1
16

=20×

1
16

=1

1
4

(2)1

3
5
÷
8
35
×
9
14
÷6
3
7

=

8
5
×
35
8
×
9
14
×
7
45

=

7
10

(3)2

2
3
÷[(3
2
7
-1.5)×1.12]+
2
3

=2

2
3
÷(
25
14
×1.12)+
2
3

=2

2
3
÷(
25
14
×
28
25
)+
2
3

=2

2
3
÷2+
2
3

=

4
3
+
2
3

=2;

(4)(6

2
3
-3.75)÷(4
1
6
+7.5)×0.02,

=(6

2
3
-3
3
4
)÷(4
1
6
+7
1
2
)×0.02,

=

35
12
÷
70
6
×0.02,

=

1
4
×0.02,

=0.005.

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