计算下列各题:(1)(+1013)+(-11.5)+(-1013)-(+4.5);(2)(-81)÷94×49÷(-16);(3)-32-[-5-0.2÷45×(-2)2];(4)24×(16-34-58)+(-13)2÷(-172).-数学
题文
计算下列各题: (1)(+10
(2)(-81)÷
(3)-32-[-5-0.2÷
(4)24×(
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答案
(1)(+10
=10
=10
=-16; (2)(-81)÷
=(-81)×
=-16÷(-16) =1; (3)-32-[-5-0.2÷
=-9-[-5-
=-9-[-5-1] =-9+6 =-3; (4)24×(
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