计算(1)-23+(+58)-(-5)(2)×(-36)(3)-22×(-)+8÷(-2)2(4)(-1)2009-(1-0.5)××[2-(-3)2]-七年级数学
解:(1) = =40(2)法(一) = = =法(二) = = =(3) = = =4(4) = = = =
题目简介
计算(1)-23+(+58)-(-5)(2)×(-36)(3)-22×(-)+8÷(-2)2(4)(-1)2009-(1-0.5)××[2-(-3)2]-七年级数学
题目详情
(2)
(3)-22×(-
(4)(-1)2009-(1-0.5)×
答案
解:(1)![]()
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=
=40
(2)
法(一)
=
=
=
法(二)
=
=
=
(3)
=
=
=4
(4)
=
=
=
=