问题 解答题
计算:
(1)(-4
1
20
)×1.25×(-8);          
(2)(-10)•(-8.24)•(-0.1);
(3)-
5
6
×2.4×
3
5
;                 
(4)(
7
9
-
5
6
+
3
4
-
7
18
)×36;
(5)-
3
4
×(8-1
1
3
-0.04);            
(6)71
15
16
×(-8).
答案

(1)原式=-

81
20
×(-10)

=

81
2

(2)原式=(-10)×(-0.1)×(-8.24)

=-8.24;

(3)原式=-

5
6
×
3
5
×2.4

=-1.2;

(4)原式=

7
9
×36-
5
6
×36+
3
4
×36-
7
18
×36

=11;

(5)原式=-

3
4
×8+
3
4
×
4
3
+
3
4
×0.04

=-4.97;

(6)原式=71×(-8)+

15
16
×(-8)

=-568-

15
2

=-575

1
2

问答题 简答题
单项选择题 A1/A2型题