题目内容
计算题:(1)|﹣3+1|﹣(+2);
(2)﹣
+(﹣
)﹣(﹣
)﹣0.5;
(3)(﹣
)÷(﹣
)×
﹣(﹣
)2;
(4)﹣14﹣(﹣5
)×
+(﹣2)3
(2)﹣
(3)(﹣
(4)﹣14﹣(﹣5
解:(1)|﹣3+1|﹣(+2)=2﹣2=0;
(2)﹣
+(﹣
)﹣(﹣
)﹣0.5
=(﹣
﹣
)+(
﹣
)
=﹣
﹣
=﹣
;
(3)(﹣
)÷(﹣
)×
﹣(﹣
)2
=(﹣
)÷(﹣
)×
﹣
=1﹣
=
;
(4)﹣14﹣(﹣5
)×
+(﹣2)3
=﹣1+
×
﹣8
=﹣1+2﹣8
=﹣9+2
=﹣7.
(2)﹣
=(﹣
=﹣
=﹣
(3)(﹣
=(﹣
=1﹣
=
(4)﹣14﹣(﹣5
=﹣1+
=﹣1+2﹣8
=﹣9+2
=﹣7.
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