问题 解答题
能简算的要简算
2+
8
15
×
9
16
36×
4
9
÷
8
11
0.75×
9
19
÷
3
4
[2-(2-
2
5
)]×
5
8
5
8
÷
3
4
-
3
8
×
4
5
(0.8+
1
125
)×
5
4
答案

(1)2+

8
15
×
9
16

=2+

3
10

=2

3
10

(2)36×

4
9
÷
8
11

=16×

11
8

=22;

(3)0.75×

9
19
÷
3
4

=0.75÷

3
4
×
9
19

=1×

9
19

=

9
19

(4)[2-(2-

2
5
)]×
5
8

=[2-1

3
5
5
8

=

2
5
×
5
8

=

1
4

(5)

5
8
÷
3
4
-
3
8
×
4
5

=

5
6
-
3
10

=

8
15

(6)(0.8+

1
125
)×
5
4

=

4
5
×
5
4
+
1
125
×
5
4

=1+

1
100

=1

1
100

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