问题 解答题
计算:
(1)(-4)-(+13)+(-5)-(-9)
(2)(+
3
2
)-
5
12
-
5
2
+(-
7
12
)

(3)(
1
4
-
1
6
+
1
9
)×(-36)
            
(4)-32×(-2)+42÷(-2)3
答案

(1)原式=-4-13-5+9=-22+9=-13;        

( 2)原式=

3
2
-
5
2
-
5
12
-
7
12
=(
3
2
-
5
2
)-(
5
12
+
7
12
)=-1-1=-2;

(3)原式=

1
4
×(-36)-
1
6
×(-36)+
1
9
×(-36)=-9+6-4=-7;

(4)原式=-9×(-2)+16÷(-8)=18-2=16.

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