问题 解答题
计算:
(1)-40-(-19)+(-24)
(2)(-5)×(-8)-(-28)÷4
(3)(
1
2
+
5
6
-
7
12
)×12

(4)-22-(-2)2-23×(-1)2011
(5)-32÷
9
4
+|-4|×0.52+2
2
9
×(-1
1
2
2
答案

(1)-40-(-19)+(-24)

=-40+19-24

=-45;

 (2)(-5)×(-8)-(-28)÷4

=40+7

=47;    

(3)(

1
2
+
5
6
-
7
12
)×12

=6+10-7

=9;

(4))-22-(-2)2-23×(-1)2011

=-4-4+8,

=0;

(5)-32÷

9
4
+|-4|×0.52+2
2
9
×(-1
1
2
2

=-4+1+5

=2.

判断题
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