解:①27﹣13+(﹣4)﹣25
=27﹣13﹣4﹣25
=﹣15;
②0.25+(﹣)﹣﹣|﹣|
=﹣﹣﹣
=
=﹣1;
③
=×(﹣)﹣×(﹣)﹣×(﹣)
=﹣2+1
=﹣;
④﹣23+[18﹣(﹣3)×2]÷4
=﹣8+[18+6]×
=﹣8+24×
=﹣8+6
=﹣2;
⑤﹣71×16
=(﹣71﹣)×16
=(﹣71)×16﹣×16
=﹣1136﹣15
=﹣1151;
⑥
=﹣1××(﹣)+
=.
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