问题
解答题
计算: (1)[-22+(-2)3]-(-2)×(-3) (2)(
(3)-1.6÷[(-
(4)-14+〔1-(1-0.5×2)〕÷|2-(-3)2| (5)29
|
答案
(1)原式=(-4-8)-6
=-12-6
=-18;
(2)原式=(
+1 2
-5 6
)×(-36)7 12
=-18-30+21
=-27;
(3)原式=-1.6÷(-
×27-4)4 9
=-1.6÷(-12-4)
=-1.6÷(-16)
=-0.1;
(4)原式=-1+【1-(1-1)】÷|2-9|
=-1+1÷7
=-1+1 7
=-
;6 7
(5)原式=(30-
)×(-5)1 15
=150+1 3
=-149
.2 3