问题
解答题
(1)2+(-6)+0+1
(2)+(+18)-|-14|-(+8)-(-1) (3)-1
(4)(-6)×(-3
(5)39
(6)-14-(
(7)[-1
(8)-1
|
答案
(1)原式=(2+1
)-3.5=3.25-3.5=-0.25;1 4
(2)原式=18-14-8+1=-3;
(3)原式=-
×3 2
×(-3 4
)×1 5
×5 4
×(-5 7
)=-7 5
;9 32
(4)原式=6×
+7×22 7
-13×22 7
=22 7
×(6+7-13)=0;22 7
(5)原式=(40-
)×(-12)=-480+1 24
=-4791 2
;1 2
(6)原式=-1-(
-13 17
)×(4-4)=-1;11 18
(7)原式=(-
-28+33-6)×13 8
=-1 5
-13 40
=-1 5
;21 40
(8)原式=-
×(1-3×3 2
)-4 9
×(-8)×1 16
=64 27
+1 2
=32 27
.91 54