问题 解答题
(1)3
8
-5
32

(2)
18
-
72
+
50

(3)
12
×
6
  
(4)(
2
5
)
2

(5)
12
×
3
-5

(6)
6
×
3
2

(7)
(-
1
3
)
2
-
(-6)2
+
1-(
4
5
)
2

(8)32÷(-3)2+|-
1
6
|×(-6)+
49
答案

(1)原式=6

2
-20
2

=-14

2

(2)原式=3

2
-6
2
+5
2

=2

2

(3)原式=

12×6

=

72

=6

2

(4)原式=(

2×5
2

=10;

(5)原式=

12×3
-5

=

36
-5

=6-5

=1;

(6)原式=

6×3
2

=

18
2

=3;

(7)原式=

1
3
-6+
3
5

=-5

1
15

(8)原式=9÷9+

1
6
×(-6)+7

=1-1+7

=7.

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