计算:(1)312-(-13)+(-12)+223(2)-14-16×〔3-(-32)〕×(-2)(3)(-79-1112+16)×(-6)2(4)-22-[2-(1+13×0.5)]÷[32-(-2)2].-数学
题文
计算: (1)3
(2)-14-
(3)(-
(4)-22-[2-(1+
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答案
(1)原式=3
=3
=3+3 =6; (2)原式=-1-
=-1-
=-1-2 =-3; (3)原式=(-
=-
=-28-33+6 =-61+6 =-55; (4)原式=-4-[2-(1+
=-4-[2-1
=-4-
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