问题
解答题
计算: (1)11-6.5+9-3.5-2 (2)0-(-6)+5-|6-11| (3)5
(4)(-3)×
(5)(
(6)-
(7)(-36
|
答案
(1)原式=(11+9)+[(-6.5)+(-3.5)+(-2)]=20+(-12)=8;
(2)原式=0+6+5-5=6;
(3)原式=5.2-(
+4.2+1 6
)=5.2-5.2=0;5 6
(4)原式=-3×
×5 6
×9 5
=-1 3
;3 2
(5)原式=
×(-12)+1 2
×(-12)-1 3
×(-12)=-6-4+3=-7;1 4
(6)原式=-
-(2 3
-13 4
-1 2
+2-3 4
)=-2 3
-2 3
+13 4
+1 2
-2+3 4
=-2 3
;1 2
(7)原式=(-36-
)×9 11
=-36×1 9
-1 9
×9 11
=-4-1 9
=-41 11
.1 11