问题
解答题
计算: (1)(-4)-(+13)+(-5)-(-9) (2)(+
(3)(
(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
)=-1-1=-2;7 12
(3)原式=
×(-36)-1 4
×(-36)+1 6
×(-36)=-9+6-4=-7;1 9
(4)原式=-9×(-2)+16÷(-8)=18-2=16.