题文
(1)![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/201209030724100943147.png)
(2)![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/201209030724131102722.png)
(3)(﹣2)3×|﹣3|﹣(﹣16.5)
(4)![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/201209030724131263302.png)
(5)﹣3×[(﹣4)2+2]﹣(﹣3)2÷(﹣2)
题型:未知 难度:其他题型
答案
解:(1)原式=12﹣7.5+18﹣32.5=﹣10;
(2)原式=(﹣![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/20120903072413142627.png)
)×![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/20120903072413157646.png)
×(﹣![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/20120903072413173671.png)
)=![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/20120903072413188630.png)
;
(3)原式=(﹣8)×3+16.5=﹣7.5;
(4)原式=(![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/20120903072413204599.png)
﹣![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/20120903072413220935.png)
+![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/20120903072413235955.png)
×(﹣42)
=![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/20120903072413251599.png)
×(﹣42)﹣![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/20120903072413267939.png)
×(﹣42)+![3×|﹣3|﹣﹣3×[2+2]﹣2÷ 3×|﹣3|﹣﹣3×[2+2]﹣2÷](https://www.mshxw.com/file/tupian/20211120/20120903072413282945.png)
×(﹣42)
=(﹣14)+22﹣9=﹣1;
(5)原式=(﹣3)×[169+2]﹣9÷(﹣2)
=(﹣3)×18﹣9÷(﹣2)
=(﹣54)+4.5=﹣49.5.
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解析
该题暂无解析
考点
据考高分专家说,试题“(1)(2)(3)(﹣2)3×|﹣.....”主要考查你对 [有理数的混合运算 ]考点的理解。
有理数的混合运算
有理数的混合运算:
是一个运算式子中有加有减有乘有除有次方等运算方式的混合运算方式。
有理数混合运算的规律:
(1)先乘方,再乘除,最后加减;
(2)同级运算,从左到右进行;
(3)若有括号,先做括号内的运算,按小括号、中括号、大括号依次进行计算。


